diff --git a/htdocs/js/GraphTool/circletool.js b/htdocs/js/GraphTool/circletool.js
index af51d27ac..0021ed02b 100644
--- a/htdocs/js/GraphTool/circletool.js
+++ b/htdocs/js/GraphTool/circletool.js
@@ -16,9 +16,19 @@
 							fixed: true,
 							highlight: false,
 							strokeColor: gt.color.curve,
-							dash: solid ? 0 : 2
+							dash: solid ? 0 : 2,
+							tabindex: ''
 						})
 					);
+					this.baseObj.setAttribute({
+						aria: {
+							enabled: true,
+							label: this.constructor.ariaLabel,
+							roledescription: this.constructor.strId,
+							live: 'assertive',
+							atomic: true
+						}
+					});
 					this.definingPts.push(center, point);
 					this.focusPoint = center;
 
@@ -47,6 +57,14 @@
 					);
 				}
 
+				static ariaLabel(c) {
+					return (
+						(c.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+						` circle centered at ${c.center.X()}, ${c.center.Y()} and ` +
+						`passing through the point ${c.point2.X()}, ${c.point2.Y()}`
+					);
+				}
+
 				static restore(string) {
 					let pointData = gt.pointRegexp.exec(string);
 					const points = [];
@@ -116,7 +134,9 @@
 							highlight: false,
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
-							withLabel: false
+							withLabel: false,
+							tabindex: 0,
+							aria: gt.pointAria
 						});
 						this.hlObjs.hl_point.rendNode.focus();
 					}
@@ -129,7 +149,15 @@
 							fixed: true,
 							strokeColor: gt.color.underConstruction,
 							highlight: false,
-							dash: gt.drawSolid ? 0 : 2
+							dash: gt.drawSolid ? 0 : 2,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: gt.graphObjectTypes[this.object].ariaLabel,
+								roledescription: this.object,
+								live: 'assertive',
+								atomic: true
+							}
 						});
 					}
 
@@ -151,7 +179,9 @@
 						highlight: false,
 						snapToGrid: true,
 						snapSizeX: gt.snapSizeX,
-						snapSizeY: gt.snapSizeY
+						snapSizeY: gt.snapSizeY,
+						tabindex: '',
+						aria: gt.pointAria
 					});
 					this.center.setAttribute({ fixed: true });
 
diff --git a/htdocs/js/GraphTool/cubictool.js b/htdocs/js/GraphTool/cubictool.js
index 46b4e23b2..0bd133925 100644
--- a/htdocs/js/GraphTool/cubictool.js
+++ b/htdocs/js/GraphTool/cubictool.js
@@ -98,7 +98,19 @@
 							strokeWidth: 2,
 							highlight: false,
 							strokeColor: color ? color : gt.color.underConstruction,
-							dash: solid ? 0 : 2
+							dash: solid ? 0 : 2,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: (c) =>
+									(c.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+									` cubic passing through ${point1.X()}, ${point1.Y()}, and ` +
+									`${point2.X()}, ${point2.Y()}, and ${point3.X()}, ${point3.Y()}, ` +
+									`and ${point4.X()}, ${point4.Y()}`,
+								roledescription: 'cubic',
+								live: 'assertive',
+								atomic: true
+							}
 						}
 					);
 				}
@@ -294,7 +306,9 @@
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
 							highlight: false,
-							withLabel: false
+							withLabel: false,
+							tabindex: '',
+							aria: gt.pointAria
 						});
 						this.hlObjs.hl_point.rendNode.focus();
 					}
@@ -341,7 +355,18 @@
 							fixed: true,
 							strokeColor: gt.color.underConstruction,
 							highlight: false,
-							dash: gt.drawSolid ? 0 : 2
+							dash: gt.drawSolid ? 0 : 2,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: (l) =>
+									(l.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+									` line through ${l.point1.X()}, ${l.point1.Y()}, ` +
+									`and ${l.point2.X()}, ${l.point2.Y()}`,
+								roledescription: 'line',
+								live: 'assertive',
+								atomic: true
+							}
 						});
 					}
 
diff --git a/htdocs/js/GraphTool/filltool.js b/htdocs/js/GraphTool/filltool.js
index 3935edfbc..2c2331bc8 100644
--- a/htdocs/js/GraphTool/filltool.js
+++ b/htdocs/js/GraphTool/filltool.js
@@ -21,7 +21,15 @@
 						highlightStrokeOpacity: 0,
 						fillOpacity: 0,
 						highlightFillOpacity: 0,
-						fixed: gt.isStatic
+						fixed: gt.isStatic,
+						tabindex: 0,
+						aria: {
+							enabled: true,
+							label: (p) => `shade the region containing the point ${p.X()}, ${p.Y()}`,
+							roledescription: 'shading point',
+							live: 'assertive',
+							atomic: true
+						}
 					});
 					this.definingPts.push(point);
 					this.focusPoint = point;
@@ -41,7 +49,15 @@
 							[() => point.X() - 12 / gt.board.unitX, () => point.Y() - 12 / gt.board.unitY],
 							[() => 24 / gt.board.unitX, () => 24 / gt.board.unitY]
 						],
-						{ withLabel: false, highlight: false, layer: 8, name: 'FillIcon', fixed: true }
+						{
+							withLabel: false,
+							highlight: false,
+							layer: 8,
+							name: 'FillIcon',
+							fixed: true,
+							tabindex: '',
+							aria: { enabled: true, hidden: true, live: 'off' }
+						}
 					);
 
 					if (!gt.isStatic) {
@@ -226,7 +242,21 @@
 						this.fillObj = gt.board.create(
 							'image',
 							[dataURL, [bBox[0], bBox[3]], [bBox[2] - bBox[0], bBox[1] - bBox[3]]],
-							{ withLabel: false, highlight: false, fixed: true, layer: 0 }
+							{
+								withLabel: false,
+								highlight: false,
+								fixed: true,
+								layer: 0,
+								tabindex: '',
+								aria: {
+									enabled: true,
+									label: () =>
+										`shaded region containing the point ${this.baseObj.X()}, ${this.baseObj.Y()}`,
+									roledescription: 'shading',
+									live: 'assertive',
+									atomic: true
+								}
+							}
 						);
 					};
 
@@ -343,7 +373,15 @@
 							withLabel: false,
 							snapToGrid: true,
 							snapSizeX: gt.snapSizeX,
-							snapSizeY: gt.snapSizeY
+							snapSizeY: gt.snapSizeY,
+							tabindex: 0,
+							aria: {
+								enabled: true,
+								label: (p) => `shade the region containing the point ${p.X()}, ${p.Y()}`,
+								roledescription: 'shading point',
+								live: 'assertive',
+								atomic: true
+							}
 						});
 						this.hlObjs.hl_point.rendNode.classList.add('hidden-fill-point');
 
@@ -357,7 +395,14 @@
 								],
 								[() => 24 / gt.board.unitX, () => 24 / gt.board.unitY]
 							],
-							{ withLabel: false, highlight: false, fixed: true, layer: 8 }
+							{
+								withLabel: false,
+								highlight: false,
+								fixed: true,
+								layer: 8,
+								tabindex: '',
+								aria: { enabled: true, hidden: true, live: 'off' }
+							}
 						);
 
 						this.hlObjs.hl_point.rendNode.focus();
diff --git a/htdocs/js/GraphTool/graphtool.js b/htdocs/js/GraphTool/graphtool.js
index 0991e15fe..7d7e0fb2b 100644
--- a/htdocs/js/GraphTool/graphtool.js
+++ b/htdocs/js/GraphTool/graphtool.js
@@ -1,4 +1,4 @@
-/* global JXG */
+/* global JXG, MathJax */
 
 'use strict';
 
@@ -14,6 +14,7 @@ window.graphTool = (containerId, options) => {
 		setTimeout(() => window.graphTool(containerId, options), 100);
 		return;
 	}
+	gt.graphContainer.role = 'application';
 
 	// Semantic color control
 	gt.color = {
@@ -95,9 +96,11 @@ window.graphTool = (containerId, options) => {
 			lastArrow: { size: 7 },
 			straightFirst: false,
 			straightLast: false,
-			fixed: true
+			fixed: true,
+			tabindex: '',
+			aria: { enabled: true, hidden: true, live: 'off' }
 		},
-		grid: { majorStep: [gt.snapSizeX, gt.snapSizeY] },
+		grid: { majorStep: [gt.snapSizeX, gt.snapSizeY], aria: { enabled: true, hidden: true, live: 'off' } },
 		keyboard: {
 			enabled: true,
 			dx: gt.snapSizeX,
@@ -711,15 +714,20 @@ window.graphTool = (containerId, options) => {
 			}, 100);
 		});
 
+	let currentContent = '';
+
 	gt.setMessageText = (content) => {
 		if (gt.confirmationActive || !gt.helpEnabled) return;
 
 		const newMessage = content instanceof Array ? content.join(' ') : content;
 		if (newMessage) {
+			if (currentContent === newMessage) return;
+			currentContent = newMessage;
 			const par = document.createElement('p');
 			par.textContent = newMessage;
 			gt.setMessageContent(par);
 		} else {
+			currentContent = '';
 			gt.setMessageContent();
 		}
 	};
@@ -777,6 +785,14 @@ window.graphTool = (containerId, options) => {
 
 	gt.pointRegexp = /\( *(-?[0-9]*(?:\.[0-9]*)?), *(-?[0-9]*(?:\.[0-9]*)?) *\)/g;
 
+	gt.pointAria = {
+		enabled: true,
+		label: (p) => `point at ${p.X()}, ${p.Y()}`,
+		roledescription: 'point',
+		live: 'assertive',
+		atomic: true
+	};
+
 	// This returns true if the points p1, p2, and p3 are colinear.
 	// Note that p1 must be an array of two numbers, and p2 and p3 must be JSXGraph points.
 	gt.areColinear = (p1, p2, p3) => {
@@ -913,6 +929,7 @@ window.graphTool = (containerId, options) => {
 		const point = gt.board.create('point', [gt.snapRound(x, gt.snapSizeX), gt.snapRound(y, gt.snapSizeY)], {
 			snapSizeX: gt.snapSizeX,
 			snapSizeY: gt.snapSizeY,
+			aria: gt.pointAria,
 			...gt.definingPointAttributes()
 		});
 		point.setAttribute({ snapToGrid: true });
@@ -1514,12 +1531,8 @@ window.graphTool = (containerId, options) => {
 		helpText() {
 			return (gt.selectedObj && gt.selectedObj.supportsSolidDash) ||
 				(gt.activeTool && gt.activeTool.supportsSolidDash)
-				? 'Use the ' +
-						'\\(\\rule[3px]{34px}{2px}\\) or ' +
-						'\\(\\rule[3px]{3px}{2px}' +
-						'\\hspace{4px}\\rule[3px]{4px}{2px}'.repeat(3) +
-						'\\hspace{4px}\\rule[3px]{3px}{2px}\\)' +
-						' button or type s or d to make the selected object solid or dashed.'
+				? 'Use the solid line or dashed line buttons or type s or d to ' +
+						'make the selected object solid or dashed.'
 				: '';
 		}
 	}
diff --git a/htdocs/js/GraphTool/intervaltools.js b/htdocs/js/GraphTool/intervaltools.js
index 8fa9a720c..9946f7ae1 100644
--- a/htdocs/js/GraphTool/intervaltools.js
+++ b/htdocs/js/GraphTool/intervaltools.js
@@ -43,7 +43,41 @@
 								0
 							]
 						],
-						{ fixed: true, highlight: false, strokeColor: gt.color.curve, strokeWidth: 4 }
+						{
+							fixed: true,
+							highlight: false,
+							strokeColor: gt.color.curve,
+							strokeWidth: 4,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: () => {
+									const left = point1.X() < point2.X() ? point1 : point2;
+									const right = point1.X() < point2.X() ? point2 : point1;
+									const leftIsInf = gt.isNegInfX(left.X());
+									const rightIsInf = gt.isPosInfX(right.X());
+									return (
+										'interval that starts at ' +
+										(leftIsInf
+											? ''
+											: left.getAttribute('fillColor') === 'transparent'
+												? 'but does not include '
+												: 'and includes ') +
+										(leftIsInf ? 'negative infinity' : left.X()) +
+										' and ends at ' +
+										(rightIsInf
+											? ''
+											: right.getAttribute('fillColor') === 'transparent'
+												? 'but does not include '
+												: 'and includes ') +
+										(rightIsInf ? 'infinity' : right.X())
+									);
+								},
+								roledescription: 'interval',
+								live: 'assertive',
+								atomic: true
+							}
+						}
 					);
 
 					// Redefine the segment's hasPoint method to return true if either of the end points has the
@@ -310,7 +344,9 @@
 								strokeWidth: 4,
 								strokeColor: 'transparent',
 								highlight: false,
-								lastArrow: { type: 2, size: 4 }
+								lastArrow: { type: 2, size: 4 },
+								tabindex: '',
+								aria: { enabled: true, hidden: true, live: 'off' }
 							}
 						);
 						this.definingPts[index].arrow.rendNodeTriangleEnd.setAttribute('fill', gt.color.curve);
@@ -361,7 +397,20 @@
 						snapSizeX: gt.snapSizeX,
 						snapSizeY: gt.snapSizeY,
 						...this.definingPointAttributes(),
-						...this.maybeBracketAttributes()
+						...this.maybeBracketAttributes(),
+						aria: {
+							enabled: true,
+							label: (p) =>
+								gt.isNegInfX(p.X())
+									? 'end point negative infinity'
+									: gt.isPosInfX(p.X())
+										? 'end point infinity'
+										: (p.getAttribute('fillColor') === 'transparent' ? 'excluded' : 'included') +
+											` end point ${p.X()}`,
+							roledescription: 'end point',
+							live: 'assertive',
+							atomic: true
+						}
 					});
 					point.setAttribute({ snapToGrid: true });
 
@@ -407,7 +456,9 @@
 							display: 'internal',
 							fixed: true,
 							strokeColor: gt.color.focusCurve,
-							highlightStrokeColor: gt.color.pointHighlightDarker
+							highlightStrokeColor: gt.color.pointHighlightDarker,
+							tabindex: '',
+							aria: { enabled: true, hidden: true, live: 'off' }
 						}
 					);
 
@@ -507,9 +558,22 @@
 						snapSizeX: gt.snapSizeX,
 						snapSizeY: gt.snapSizeY,
 						withLabel: false,
-						...gt.graphObjectTypes.interval.maybeBracketAttributes()
+						...gt.graphObjectTypes.interval.maybeBracketAttributes(),
+						tabindex: '',
+						aria: {
+							enabled: true,
+							label: (p) =>
+								gt.isNegInfX(p.X())
+									? 'end point negative infinity'
+									: gt.isPosInfX(p.X())
+										? 'end point infinity'
+										: (p.getAttribute('fillColor') === 'transparent' ? 'excluded' : 'included') +
+											` end point ${p.X()}`,
+							roledescription: 'end point',
+							live: 'assertive',
+							atomic: true
+						}
 					});
-					this.point1.setAttribute({ fixed: true });
 
 					if (gt.options.useBracketEnds) {
 						const point = this.point1;
@@ -540,7 +604,9 @@
 								fixed: true,
 								highlight: false,
 								strokeColor: gt.color.underConstructionFixed,
-								cssStyle: 'cursor:none;font-weight:900'
+								cssStyle: 'cursor:none;font-weight:900',
+								tabindex: '',
+								aria: { enabled: true, hidden: true, live: 'off' }
 							}
 						);
 					}
@@ -654,7 +720,22 @@
 							fillColor: gt.toolTypes.IncludeExcludePointTool.include
 								? gt.color.underConstruction
 								: 'transparent',
-							...gt.graphObjectTypes.interval.maybeBracketAttributes()
+							...gt.graphObjectTypes.interval.maybeBracketAttributes(),
+							tabindex: 0,
+							aria: {
+								enabled: true,
+								label: (p) =>
+									gt.isNegInfX(p.X())
+										? 'end point negative infinity'
+										: gt.isPosInfX(p.X())
+											? 'end point infinity'
+											: (p.getAttribute('fillColor') === 'transparent'
+													? 'excluded'
+													: 'included') + ` end point ${p.X()}`,
+								roledescription: 'end point',
+								live: 'assertive',
+								atomic: true
+							}
 						});
 
 						if (gt.options.useBracketEnds) {
@@ -684,7 +765,9 @@
 									fixed: true,
 									highlight: false,
 									strokeColor: gt.color.underConstruction,
-									cssStyle: 'cursor:none;font-weight:900'
+									cssStyle: 'cursor:none;font-weight:900',
+									tabindex: '',
+									aria: { enabled: true, hidden: true, live: 'off' }
 								}
 							);
 						}
@@ -730,7 +813,42 @@
 								fixed: true,
 								strokeWidth: 5,
 								strokeColor: gt.color.underConstruction,
-								highlight: false
+								highlight: false,
+								tabindex: '',
+								aria: {
+									enabled: true,
+									label: () => {
+										const left =
+											this.point1 && this.point1.X() < this.hlObjs.hl_point.X()
+												? this.point1
+												: this.hlObjs.hl_point;
+										const right =
+											!this.point1 || this.point1.X() < this.hlObjs.hl_point.X()
+												? this.hlObjs.hl_point
+												: this.point1;
+										const leftIsInf = gt.isNegInfX(left.X());
+										const rightIsInf = gt.isPosInfX(right.X());
+										return (
+											'interval that starts at ' +
+											(leftIsInf
+												? ''
+												: left.getAttribute('fillColor') === 'transparent'
+													? 'but does not include '
+													: 'and includes ') +
+											(leftIsInf ? 'negative infinity' : left.X()) +
+											' and ends at ' +
+											(rightIsInf
+												? ''
+												: right.getAttribute('fillColor') === 'transparent'
+													? 'but does not include '
+													: 'and includes ') +
+											(rightIsInf ? 'infinity' : right.X())
+										);
+									},
+									roledescription: 'interval',
+									live: 'assertive',
+									atomic: true
+								}
 							}
 						);
 						// The default layer for lines (of which arrows are a part) is 7.
@@ -778,7 +896,9 @@
 										strokeWidth: 5,
 										strokeColor: 'transparent',
 										highlight: false,
-										lastArrow: { type: 2, size: 4 }
+										lastArrow: { type: 2, size: 4 },
+										tabindex: '',
+										aria: { enabled: true, hidden: true, live: 'off' }
 									}
 								);
 								this.hlObjs.hl_arrow.rendNodeTriangleEnd.setAttribute(
diff --git a/htdocs/js/GraphTool/linetool.js b/htdocs/js/GraphTool/linetool.js
index 9e97d1a3c..666039931 100644
--- a/htdocs/js/GraphTool/linetool.js
+++ b/htdocs/js/GraphTool/linetool.js
@@ -16,9 +16,19 @@
 							fixed: true,
 							highlight: false,
 							strokeColor: gt.color.curve,
-							dash: solid ? 0 : 2
+							dash: solid ? 0 : 2,
+							tabindex: ''
 						})
 					);
+					this.baseObj.setAttribute({
+						aria: {
+							enabled: true,
+							label: this.constructor.ariaLabel,
+							roledescription: this.constructor.strId,
+							live: 'assertive',
+							atomic: true
+						}
+					});
 					this.definingPts.push(point1, point2);
 					this.focusPoint = point1;
 				}
@@ -38,7 +48,7 @@
 					return gt.sign(JXG.Math.innerProduct(point, this.baseObj.stdform));
 				}
 
-				hasPoint(point) {
+				onBoundary(point) {
 					return (
 						Math.abs(JXG.Math.innerProduct(point, this.baseObj.stdform)) /
 							Math.sqrt(this.baseObj.stdform[1] ** 2 + this.baseObj.stdform[2] ** 2) <
@@ -46,6 +56,13 @@
 					);
 				}
 
+				static ariaLabel(l) {
+					return (
+						(l.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+						` line through ${l.point1.X()}, ${l.point1.Y()}, and ${l.point2.X()}, ${l.point2.Y()}`
+					);
+				}
+
 				static restore(string) {
 					let pointData = gt.pointRegexp.exec(string);
 					const points = [];
@@ -115,7 +132,9 @@
 							highlight: false,
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
-							withLabel: false
+							withLabel: false,
+							tabindex: 0,
+							aria: gt.pointAria
 						});
 						this.hlObjs.hl_point.rendNode.focus();
 					}
@@ -128,7 +147,15 @@
 							fixed: true,
 							strokeColor: gt.color.underConstruction,
 							highlight: false,
-							dash: gt.drawSolid ? 0 : 2
+							dash: gt.drawSolid ? 0 : 2,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: gt.graphObjectTypes[this.object].ariaLabel,
+								roledescription: this.object,
+								live: 'assertive',
+								atomic: true
+							}
 						});
 					}
 
@@ -151,7 +178,9 @@
 						highlight: false,
 						snapToGrid: true,
 						snapSizeX: gt.snapSizeX,
-						snapSizeY: gt.snapSizeY
+						snapSizeY: gt.snapSizeY,
+						tabindex: '',
+						aria: gt.pointAria
 					});
 					this.point1.setAttribute({ fixed: true });
 
diff --git a/htdocs/js/GraphTool/parabolatool.js b/htdocs/js/GraphTool/parabolatool.js
index e0d65cce5..b8a9ea6df 100644
--- a/htdocs/js/GraphTool/parabolatool.js
+++ b/htdocs/js/GraphTool/parabolatool.js
@@ -73,7 +73,18 @@
 								strokeWidth: 2,
 								highlight: false,
 								strokeColor: color ? color : gt.color.underConstruction,
-								dash: solid ? 0 : 2
+								dash: solid ? 0 : 2,
+								tabindex: '',
+								aria: {
+									enabled: true,
+									label: (p) =>
+										(p.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+										` vertical parabola with vertex ${vertex.X()}, ${vertex.Y()} and ` +
+										`passing through the point ${point.X()}, ${point.Y()}`,
+									roledescription: 'vertical parabola',
+									live: 'assertive',
+									atomic: true
+								}
 							}
 						);
 					else
@@ -91,7 +102,18 @@
 								strokeWidth: 2,
 								highlight: false,
 								strokeColor: color ? color : gt.color.underConstruction,
-								dash: solid ? 0 : 2
+								dash: solid ? 0 : 2,
+								tabindex: '',
+								aria: {
+									enabled: true,
+									label: (p) =>
+										(p.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+										` horizontal parabola with vertex ${vertex.X()}, ${vertex.Y()} and ` +
+										`passing through the point ${point.X()}, ${point.Y()}`,
+									roledescription: 'horizontal parabola',
+									live: 'assertive',
+									atomic: true
+								}
 							}
 						);
 				}
@@ -161,7 +183,9 @@
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
 							highlight: false,
-							withLabel: false
+							withLabel: false,
+							tabindex: 0,
+							aria: gt.pointAria
 						});
 						this.hlObjs.hl_point.rendNode.focus();
 					}
@@ -197,7 +221,9 @@
 						highlight: false,
 						snapToGrid: true,
 						snapSizeX: gt.snapSizeX,
-						snapSizeY: gt.snapSizeY
+						snapSizeY: gt.snapSizeY,
+						tabindex: '',
+						aria: gt.pointAria
 					});
 					this.vertex.setAttribute({ fixed: true });
 
diff --git a/htdocs/js/GraphTool/pointtool.js b/htdocs/js/GraphTool/pointtool.js
index eea92d4fd..4b76c3920 100644
--- a/htdocs/js/GraphTool/pointtool.js
+++ b/htdocs/js/GraphTool/pointtool.js
@@ -23,7 +23,8 @@
 							fixed: gt.isStatic,
 							highlightStrokeColor: gt.color.underConstruction,
 							highlightFillColor: gt.color.pointHighlight,
-							tabindex: gt.isStatic ? -1 : 0
+							tabindex: gt.isStatic ? -1 : 0,
+							aria: gt.pointAria
 						})
 					);
 
@@ -160,7 +161,9 @@
 							highlight: false,
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
-							withLabel: false
+							withLabel: false,
+							tabindex: 0,
+							aria: gt.pointAria
 						});
 						this.hlObjs.hl_point.rendNode.focus();
 					}
diff --git a/htdocs/js/GraphTool/quadratictool.js b/htdocs/js/GraphTool/quadratictool.js
index bef7eb289..c25355f5c 100644
--- a/htdocs/js/GraphTool/quadratictool.js
+++ b/htdocs/js/GraphTool/quadratictool.js
@@ -82,7 +82,18 @@
 							strokeWidth: 2,
 							highlight: false,
 							strokeColor: color ? color : gt.color.underConstruction,
-							dash: solid ? 0 : 2
+							dash: solid ? 0 : 2,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: (q) =>
+									(q.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+									` quadratic passing through ${point1.X()}, ${point1.Y()}, and ` +
+									`${point2.X()}, ${point2.Y()}, and ${point3.X()}, ${point3.Y()}`,
+								roledescription: 'quadratic',
+								live: 'assertive',
+								atomic: true
+							}
 						}
 					);
 				}
@@ -133,7 +144,9 @@
 							size: 2,
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
-							withLabel: false
+							withLabel: false,
+							tabindex: '',
+							aria: gt.pointAria
 						}
 					);
 					point.setAttribute({ snapToGrid: true });
@@ -311,7 +324,9 @@
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
 							highlight: false,
-							withLabel: false
+							withLabel: false,
+							tabindex: 0,
+							aria: gt.pointAria
 						});
 						this.hlObjs.hl_point.rendNode.focus();
 					}
@@ -343,7 +358,18 @@
 							fixed: true,
 							strokeColor: gt.color.underConstruction,
 							highlight: false,
-							dash: gt.drawSolid ? 0 : 2
+							dash: gt.drawSolid ? 0 : 2,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: (l) =>
+									(l.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+									` line through ${l.point1.X()}, ${l.point1.Y()}, ` +
+									`and ${l.point2.X()}, ${l.point2.Y()}`,
+								roledescription: 'line',
+								live: 'assertive',
+								atomic: true
+							}
 						});
 					}
 
diff --git a/htdocs/js/GraphTool/quadrilateral.js b/htdocs/js/GraphTool/quadrilateral.js
index b9211b968..4ad9cf554 100644
--- a/htdocs/js/GraphTool/quadrilateral.js
+++ b/htdocs/js/GraphTool/quadrilateral.js
@@ -94,7 +94,7 @@
 					return -1;
 				}
 
-				onBoundary(point, aVal, _from) {
+				onBoundary(point, aVal) {
 					if (this.fillCmp(point) != aVal) return true;
 
 					for (const border of this.baseObj.borders) {
@@ -284,7 +284,9 @@
 							size: 2,
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
-							withLabel: false
+							withLabel: false,
+							tabindex: '',
+							aria: gt.pointAria
 						}
 					);
 					point.setAttribute({ snapToGrid: true });
@@ -344,7 +346,9 @@
 						highlight: false,
 						snapToGrid: true,
 						snapSizeX: gt.snapSizeX,
-						snapSizeY: gt.snapSizeY
+						snapSizeY: gt.snapSizeY,
+						tabindex: '',
+						aria: gt.pointAria
 					});
 					this.point1.setAttribute({ fixed: true });
 
@@ -439,7 +443,7 @@
 						if (count == 0) {
 							if (vDir != 0) ++times;
 							count = times;
-							[hDir, vDir] = [!!hDir ? 0 : -vDir, !!vDir ? 0 : hDir];
+							[hDir, vDir] = [hDir ? 0 : -vDir, vDir ? 0 : hDir];
 						}
 						newX += hDir * gt.snapSizeX;
 						newY += vDir * gt.snapSizeY;
@@ -544,7 +548,9 @@
 							highlight: false,
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
-							withLabel: false
+							withLabel: false,
+							tabindex: 0,
+							aria: gt.pointAria
 						});
 						this.hlObjs.hl_point.rendNode.focus();
 					}
@@ -584,7 +590,18 @@
 							highlight: false,
 							dash: gt.drawSolid ? 0 : 2,
 							straightFirst: false,
-							straightLast: false
+							straightLast: false,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: (l) =>
+									(l.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+									` line segment between ${l.point1.X()}, ${l.point1.Y()} ` +
+									`and ${l.point2.X()}, ${l.point2.Y()}`,
+								roledescription: 'line',
+								live: 'assertive',
+								atomic: true
+							}
 						});
 					}
 
diff --git a/htdocs/js/GraphTool/segments.js b/htdocs/js/GraphTool/segments.js
index 48e2c2fef..ed472d646 100644
--- a/htdocs/js/GraphTool/segments.js
+++ b/htdocs/js/GraphTool/segments.js
@@ -1,4 +1,4 @@
-/* global graphTool */
+/* global graphTool, JXG */
 
 'use strict';
 
@@ -59,6 +59,13 @@
 								0.5 / Math.sqrt(gt.board.unitX * gt.board.unitY)
 						);
 					}
+
+					static ariaLabel(l) {
+						return (
+							(l.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+							` segment between ${l.point1.X()}, ${l.point1.Y()} and ${l.point2.X()}, ${l.point2.Y()}`
+						);
+					}
 				};
 			},
 
@@ -97,6 +104,14 @@
 						super(point1, point2, solid);
 						this.baseObj.setArrow(false, { type: 1, size: 4 });
 					}
+
+					static ariaLabel(l) {
+						return (
+							(l.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+							` vector with initial point ${l.point1.X()}, ${l.point1.Y()} ` +
+							`and terminal point ${l.point2.X()}, ${l.point2.Y()}`
+						);
+					}
 				};
 			},
 
diff --git a/htdocs/js/GraphTool/sinewavetool.js b/htdocs/js/GraphTool/sinewavetool.js
index a46e597a1..b7ec48d60 100644
--- a/htdocs/js/GraphTool/sinewavetool.js
+++ b/htdocs/js/GraphTool/sinewavetool.js
@@ -104,7 +104,25 @@
 							strokeWidth: 2,
 							highlight: false,
 							strokeColor: color ? color : gt.color.underConstruction,
-							dash: solid ? 0 : 2
+							dash: solid ? 0 : 2,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: (s) =>
+									(s.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+									` sine wave shifted ${Math.abs(point.X())} units to the ${
+										point.X() < 0 ? 'left' : 'right'
+									}, shifted ${Math.abs(point.Y())} units ${
+										point.X() < 0 ? 'downward' : 'upward'
+									}, with period ${
+										(2 * Math.PI) / Math.abs(period())
+									}, with amplitude ${Math.abs(amplitude())}` +
+									(period() < 0 ? ', sine wave horizontally reflected' : '') +
+									(amplitude() < 0 ? ', sine wave vertically reflected' : ''),
+								roledescription: 'sine wave',
+								live: 'assertive',
+								atomic: true
+							}
 						}
 					);
 				}
@@ -199,7 +217,24 @@
 						size: 2,
 						snapSizeX: periodPoint ? 1e-10 : gt.snapSizeX,
 						snapSizeY: shiftPoint && !periodPoint ? 1e-10 : gt.snapSizeY,
-						withLabel: false
+						withLabel: false,
+						tabindex: '',
+						aria: {
+							enabled: true,
+							label: (p) =>
+								periodPoint
+									? `sine wave amplitude ${Math.abs(p.Y() - shiftPoint.Y())}` +
+										(p.Y() > shiftPoint.Y() ? '' : ', sine wave vertically reflected')
+									: shiftPoint
+										? `sine wave period ${Math.abs(p.X() - shiftPoint.X())}` +
+											(p.X() > shiftPoint.X() ? '' : ', sine wave horizontally reflected')
+										: `sine wave shifted ${Math.abs(p.X())} units to the ${
+												p.X() < 0 ? 'left' : 'right'
+											}, and shifted ${Math.abs(p.Y())} units ${p.Y() < 0 ? 'downward' : 'upward'}`,
+							roledescription: () => (periodPoint ? 'amplitude' : shiftPoint ? 'period' : 'shift'),
+							live: 'assertive',
+							atomic: true
+						}
 					});
 					point.setAttribute({ snapToGrid: true });
 
@@ -376,7 +411,29 @@
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
 							highlight: false,
-							withLabel: false
+							withLabel: false,
+							tabindex: 0,
+							aria: {
+								enabled: true,
+								label: (p) =>
+									this.periodPoint
+										? `sine wave amplitude ${Math.abs(p.Y() - this.shiftPoint.Y())}` +
+											(p.Y() > this.shiftPoint.Y() ? '' : ', sine wave vertically reflected')
+										: this.shiftPoint
+											? `sine wave period ${Math.abs(p.X() - this.shiftPoint.X())}` +
+												(p.X() > this.shiftPoint.X()
+													? ''
+													: ', sine wave horizontally reflected')
+											: `sine wave shifted ${Math.abs(p.X())} units to the ${
+													p.X() < 0 ? 'left' : 'right'
+												}, and shifted ${Math.abs(p.Y())} units ${
+													p.Y() < 0 ? 'downward' : 'upward'
+												}`,
+								roledescription: () =>
+									this.periodPoint ? 'amplitude' : this.shiftPoint ? 'period' : 'shift',
+								live: 'assertive',
+								atomic: true
+							}
 						});
 						this.hlObjs.hl_point.rendNode.focus();
 					}
diff --git a/htdocs/js/GraphTool/triangle.js b/htdocs/js/GraphTool/triangle.js
index 757b5eb66..a8e95948b 100644
--- a/htdocs/js/GraphTool/triangle.js
+++ b/htdocs/js/GraphTool/triangle.js
@@ -82,7 +82,7 @@
 					return -1;
 				}
 
-				onBoundary(point, aVal, _from) {
+				onBoundary(point, aVal) {
 					if (this.fillCmp(point) != aVal) return true;
 
 					for (const border of this.baseObj.borders) {
@@ -122,7 +122,7 @@
 				}
 
 				static createPolygon(points, solid, color) {
-					return gt.board.create('polygon', points, {
+					const polygon = gt.board.create('polygon', points, {
 						highlight: false,
 						fillOpacity: 0,
 						fixed: true,
@@ -132,8 +132,31 @@
 							fixed: true,
 							strokeColor: color ? color : gt.color.underConstruction,
 							dash: solid ? 0 : 2
+						},
+						tabindex: '',
+						aria: {
+							enabled: true,
+							label: (t) =>
+								(t.borders[0].getAttribute('dash') == 0 ? 'solid ' : 'dashed ') +
+								(t.vertices.length === 4
+									? 'triangle'
+									: t.vertices.length == 5
+										? 'quadrilateral'
+										: 'polygon') +
+								' with vertices ' +
+								t.vertices
+									.slice(0, -1)
+									.map((p) => `${p.X()}, ${p.Y()}`)
+									.join(', and '),
+							roledescription: 'polygon',
+							live: 'assertive',
+							atomic: true
 						}
 					});
+					for (const border of polygon.borders) {
+						border.setAttribute({ tabindex: '', aria: { enabled: true, hidden: true, live: 'off' } });
+					}
+					return polygon;
 				}
 
 				// Prevent a point from being moved off the board by a drag. If one or two other points are
@@ -227,7 +250,9 @@
 							size: 2,
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
-							withLabel: false
+							withLabel: false,
+							tabindex: '',
+							aria: gt.pointAria
 						}
 					);
 					point.setAttribute({ snapToGrid: true });
@@ -284,7 +309,9 @@
 						highlight: false,
 						snapToGrid: true,
 						snapSizeX: gt.snapSizeX,
-						snapSizeY: gt.snapSizeY
+						snapSizeY: gt.snapSizeY,
+						tabindex: '',
+						aria: gt.pointAria
 					});
 					this.point1.setAttribute({ fixed: true });
 
@@ -414,7 +441,9 @@
 							highlight: false,
 							snapSizeX: gt.snapSizeX,
 							snapSizeY: gt.snapSizeY,
-							withLabel: false
+							withLabel: false,
+							tabindex: 0,
+							aria: gt.pointAria
 						});
 						this.hlObjs.hl_point.rendNode.focus();
 					}
@@ -446,7 +475,18 @@
 							highlight: false,
 							dash: gt.drawSolid ? 0 : 2,
 							straightFirst: false,
-							straightLast: false
+							straightLast: false,
+							tabindex: '',
+							aria: {
+								enabled: true,
+								label: (l) =>
+									(l.getAttribute('dash') == 0 ? 'solid' : 'dashed') +
+									` line segment between ${l.point1.X()}, ${l.point1.Y()} ` +
+									`and ${l.point2.X()}, ${l.point2.Y()}`,
+								roledescription: 'line',
+								live: 'assertive',
+								atomic: true
+							}
 						});
 					}