Miscellaneous features

Help menu

Displays the Help screen. Context-sensitive help is also available for several topics by clicking on the ``Help'' button. The help file, tnimage.hlp, can be edited to include site-specific information. Pressing F1 when the cursor is not on an image also calls the help screen. For more detailed help, see this manual, which is available in PostScript, dvi, and HTML formats.

Image notes

Pressing F1 when the cursor is on an image displays a small text editor containing the comments for the image. You can enter any text (up to 65536 characters) in this editor. Clicking the ``Save'' button in the editor's window will save the notes. This feature is useful for documenting changes made to the image, patient information, etc.

The image notes are saved in the file $HOME/.tnimage/notes/filename where filename is the same as the image filename. This has several implications:

1. Since the notes are not saved in the image file itself, they will not be present if the file is copied to another computer and will not be visible if a different imaging program is used.
2. The notes can be edited with any text editor.
3. The notes will be different for each user. This is unavoidable because of security considerations. tnimage is typically not run by root and could not access any common area without giving any user on the system the ability to read, change or delete any image note.

Frame rate test

Alt-T - Test video - Tests the maximum frame rate of your video system.

Frame rates will be much lower in Unix X11 versions and in Windows.

Emergency image repair

Alt-R - Rebuild screen display If for some reason the display is incorrect, Alt-R will cause it to be rebuilt.

Repeat previous command

Shift-Enter - Repeats the previous command.

Erase image

Alt-E - Erase image Erases the currently-selected image (after asking you). Useful if memory somehow gets filled with images and there is insufficient memory to open a window. This can sometimes happen in a Windows DOS box but should not happen in DOS or Unix.

Sketch mode

F2 - Toggles Sketch mode on/off

Area selection mode

F3 - Starts manual area selection mode (click Cancel to stop)

Setting Wallpaper

The image can be placed in the root window using the ``root'' command in the Command Editor. Most operations, including animation, are still functional; however, it is not possible to copy and paste regions of the image on the root window.

The ``root-off'' command restores the image back into its normal window.

The ``root-permanent'' and ``wallpaper'' command puts multiple copies of the image in the X11 display background. This becomes permanent wallpaper for the display; however, animation ceases when you exit tnimage.