Editor user interface
Bookmarks
Bookmarks allow easy reference to places in the code. Bookmarks work
separately within each source file, they do not jump from file to file. To
set a bookmark, press ctrl+shift+ a number key from 0 to 9. The bookmark
number will appear in the "gutter" to the left of the line numbers.
To go to a bookmark, press ctrl+ the number (0 to 9) of the bookmark.
To clear a bookmark, go to the bookmark, press ctrl+shift+ the number.