Apply suggestions from code review

Co-authored-by: Tim Pillinger <[email protected]>

Author: hjoliver

src/glossary.rst

@@ -69,7 +69,7 @@ Glossary
       don't get overwritten.
 
    active task
-      Active tasks are those tasks currently held in working memory to feed
+      Active tasks are those tasks held in memory to feed
       the scheduling algorithm. They form the ``n=0`` :term:`n-window`,
       so are always visible in the GUI.
 

src/user-guide/running-workflows/tasks-jobs-ui.rst

@@ -109,7 +109,7 @@ extent for :term:`cycling workflows <cycling workflow>` with no
 :term:`final cycle point`.
 
 Consequently the GUI often can't display "all of the tasks" at once. Instead
-it displays all tasks a configurable :term:`n-window` around the current
+it displays all tasks in a configurable :term:`n-window` around the current
 :term:`active tasks <active task>`.
 
 .. image:: ../../img/n-window.png
@@ -118,7 +118,7 @@ it displays all tasks a configurable :term:`n-window` around the current
 
 n=0:
    The ``n=0`` window contains current :term:`active tasks <active task>`: those
-   that are near ready to run, running, or which require user intervention.
+   that are near ready to run, running, or which may require user intervention.
 n=1:
    The ``n=1`` window contains the ``n=0`` tasks plus those out
    to *one* graph edge around them in the graph.

src/user-guide/running-workflows/workflow-completion.rst

@@ -12,10 +12,13 @@ downstream activity - i.e., when :term:`n=0 window <n-window>` empties out.
 Scheduler Stall
 ===============
 
-If there are no tasks waiting on as yet unsatisfied external constraints
-such clock and xtriggers, and all activity has ceased but workflow has
-not :ref:`run to completion <workflow completion>`, then it
-has stalled and requires manual intervention to continue.
+A workflow has stalled if:
+
+* No tasks are waiting on unstatisfied external events, like clock triggers and xtriggers.
+* AND All activity has ceased.
+* AND The workflow has not run to completion.
+
+A workflow which has stalled requires manual intervention to continue.
 
 Stalls are caused by :term:`final status incomplete tasks <output completion>`
 and :term:`partially satisfied tasks <prerequisite>`.