## File Display Options

In addition to Line Numbers many things can be controlled from the File tab of the Options->Preferences dialog:

- Show Line Numbers - check (the default) to turn on line numbers in the source view
- Highlight Matching Brackets - check to enable matching of brackets. See description Bracket Matching .
- Convert new tabs to spaces - check to have any new tabs replaced with spaces while editing.
- Convert existing tabs to spaces during save - check to have any existing tabs replaced with spaces when the file is saved.
- Clear undo buffer during save - check (the default) this box to discard the history of changes when saving the file. If this box is checked, you cannot use Edit->Undo to remove changes after saving the file.
- Tab size - the number of blank spaces to use when showing tabs or replacing with spaces.
- New Files as.... - Sets the type of file to create when making a new file.

- PC (Microsoft Windows) line-endings are terminated with a combination of a carriage return (\r) and a newline (\n), also referred to as CR/LF.
- UNIX line-endings are terminated with a newline (\n), also referred to as a linefeed (LF).
- Macintosh line-endings are terminated with a single carriage return (CR).

- Save Files as - whether to force a given file type or to preserve the type the file have before editing. The default is to preserve the type.
- When files are modified externally.... - If an open file is changed through some other program, Understand will detect this. Choose Prompt if you want to be notified and asked to load that changed version. Auto-Reload does this without prompting. Ignore is dangerous and not recommended.
- Before running commands, if modified files... - If a file has been modified, this setting controls the action performed when you run a command. The options are to Prompt you for whether to save, to Automatically save all modified files, or to Ignore modified files.

Scientific Toolworks, Inc. http://www.scitools.com