The controls on this page are used to configure the behaviour and appearance of file comparison windows.
Link horizontal scrolling
When this option is checked, Merge will match the horizontal scroll positions of the linked files. As one file is scrolled from side to side the other file (or files) will be scrolled as well. When scrolling a panel using a scroll bar, you can hold down Ctrl+Cmd to enable/disable linking.
Link vertical scrolling
When this option is checked, Merge will match the vertical scroll positions of the linked files. As one file is scrolled up and down, the other linked file (or files) will be scrolled as well. When scrolling a panel using a scroll bar, you can hold down Ctrl+Cmd to enable/disable linking.
Extend linking lines across documents
When this option is checked, the lines drawn within the linking lines panel are extended across the two file panels. This makes it easier to see which lines belong to each change block. You may prefer to turn this option off for a less cluttered display, especially if you have configured different background colours for each of the changed text block types on the Fonts/Colours page.
Linking lines panel width
Sets the width (in points) of the linking lines panel. You may wish to reduce the width if you are using a low resolution display or comparing three files side-by-side.
Automatically reload externally modified files
Check this option to make Merge check whether open files have been modified by other editors. When Merge finds that a file has been changed on disk, it will be reloaded if it has not been modified within Merge.
Note: On some file systems, it can be time consuming (or impossible) for Merge to check whether a file has been modified. Merge will not check for modified files on these file systems.