Comments by default are collapsed. Hovering the mouse cursor over a collapsed comment will show its contents as a ToolTip. You can also click the region + expand button for the line comment to show it. Left mouse double-click on a comment will also expand the comment region to show the comment.
When searching the document for text, search results will be highlighted to show their position within the document. The document view margin located to the right of the document view will indicate where all occurrences of this search text exists. You can also left mouse-click while holding the Ctrl key down to quickly find and highlight all occurrences of an SCM sequence element Id.
Indicates where searched text references exist within the document view. You can hover mouse cursor over the highlight glyph to view a ToolTip that shows the source line contents. You can also left mouse-click on a glyph to navigate to the view source.