The Editor display » Line change indicator branch of Settings includes the following options.
This text field may be used to specify the width of the line change indicator in pixels. Values may be set between 1 and 9.
If this option is selected, modified lines will be indicated with a special colored shading between the line numbers and the first character on the line – this is the line change indicator (LCI). The colors used to indicate saved and unsaved changes to a file within an editing session are configured in the "Editor" tab of the Manage themes dialog. If the undo buffer is cleared during an editing session, the LCIs are reset as well.
If a file is opened that exceeds the threshold specified for using temporary files in Settings » File handling » Temporary files, and the option is set to open without a temporary file in this case, the LCI will not be displayed.
This setting is a global toggle for the LCI. If users wish to toggle this option on/off on a file-by-file basis, this may be done using the option in the View tab. If files were already open for editing when this option is changed, they would need to be reloaded or the LCI setting would need to be toggled in the View tab to affect these files.
This option can only be selected if the option above is selected. When this is selected and changes are made to a file, the changes are tracked, but the LCI is not immediately shown for modified lines. If the user wishes to see which lines have been modified, he can click on the "Line change indicator" button in the View tab to toggle visibility of the LCI.
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