docs: Update Playground documentation

Author: igorlukanin

docs/pages/product/workspace/playground.mdx

@@ -47,8 +47,8 @@ on a cube or a view to view a list of its members.
   src="https://ucarecdn.com/08d5cc69-431d-43d9-8da4-804029adf1fa/"
 />
 
-Members of cubes and views (i.e., measures, dimensions, hierarchies, etc.) are shown
-using distinct colors and icons. If a member has
+Members of cubes and views (i.e., measures, dimensions, hierarchies, folders, etc.)
+are shown using distinct colors and icons. If a member has
 a [title][ref-data-model-title] or a [description][ref-data-model-description] set
 in the data model, they will be shown in a tooltip. If a member is not
 [public][ref-data-model-public], you will see a lock sign next to it.
@@ -83,7 +83,8 @@ or existing query.
 
 You can compose a new query by selecting desired measures, dimensions, and segments
 in the sidebar on the left. Click on the _funnel_ icon next to any member to add a filter
-for it to the query.
+for it to the query or use the <Btn>Filters</Btn> pane to add filters, including filters
+with [advanced boolean logic][ref-boolean-filters].
 
 Click <Btn>All members</Btn> or <Btn>Used members</Btn> to show only members of the
 query or all available members. Click <Btn>Reset</Btn> to remove all members from the query.
@@ -103,7 +104,8 @@ Use the <Btn>Order</Btn> drop-down on the right to specify how the
 
 Use the <Btn>Options</Btn> drop-down on the right to specify if the query shall be
 [ungrouped][ref-ungrouped-query], to set a [time zone][ref-time-zone], or to set
-a [row limit][ref-row-limit] and an offset.
+a [row limit][ref-row-limit] and an offset. You can also request the count of all rows
+in the result set as if there's no limit present.
 
 <Screenshot
   highlight="inset(35% 0 15% 80% round 10px)"
@@ -219,4 +221,5 @@ manually.
 [ref-ungrouped-query]: /product/apis-integrations/queries#ungrouped-query
 [ref-time-zone]: /product/apis-integrations/queries#time-zone
 [ref-row-limit]: /product/apis-integrations/queries#limit
-[ref-chart-prototyping]: /product/workspace/vizard
+[ref-chart-prototyping]: /product/workspace/vizard
+[ref-boolean-filters]: /product/apis-integrations/rest-api/query-format#boolean-logical-operators