Defines the left boundary of a subregion to restrict IMAGESEARCH. For very large pages this should reduce the time needed for IMAGESEARCH.
If this value is not given, IMAGESEARCH (or IMAGECLICK) will use the page's (visible page) left as boundary.
X-value in pixel
[ ] SET
Internal means that the iMacros program itself sets the value of the variable during program run. SET means that the user can set this value via the SET command inside a macro.
SET !REGION_LEFT 100
!REGION_TOP, !REGION_BOTTOM, !REGION_RIGHT, IMAGESEARCH, IMAGECLICK