Highlight all occurrences of selected word

This extension will highlight all occurrences of a selected word in the current document and display a glyph on the left margin.
This allows for fast visualization of a specific word used throughout the document, including ones in comments.

Steps:

1) Install the extension and verified that it is enabled in the Tools->Extension Manager.

2) In the editor window, select a word with a mouse or keyboard.  

All occurrences of the word selected should be highlighted in the current document.