The grey area on the left side of the Editor is called the Gutter. It is used for line numbers (when activated) and to tag lines with different markers:
- a bookmark,
- a breakpoint,
- a syntax error,
- search or replace results,
- modifications in the found line or broken line (
- the Editor can break a long string into several lines if the string does not fit into the Editor’s window. See Word wrap option for more information).
If a bookmark or breakpoint has a description, this description pops up when the mouse cursor is over the bookmark (or breakpoint) marker. When you move the mouse cursor over a syntax error mark, TestComplete shows the describing the error.
The gutter can be removed using the Editor Options.