Scripsit is a rudimentary word processor. It has basic text entry and margin controls, as well as word wrap. Many versions tied to specific platforms were available, and each had its own set of features. Most versions supported variable width fonts, specifically for daisy-wheel printers. None had support for graphics other than some character macros depending on the version. The Model I version even had special handling for lowercase characters.
Word processors typically require the use of special function keys to access editing commands as opposed to text entry. This proved to be a challenge on the TRS-80 Model I and Model III computers, as their keyboards had no non-typewriter modifier keys—not even a [Control] key. Instead, Tandy drafted the '@' key to access features such as margin control and load/save.
An alternate disk-only version named Superscripsit was available with spellchecking for some platforms, specifically the Model I, Model III, and Model 4. This version basically matches the functionally of the normal Scripsit for disk-based platforms such as the Model II, Model 12, and Model 16. Some additional features such as boilerplating and integration with Profile, Tandy's database program for all of their TRS-80 platforms, are available for the disk versions.
Starting Superscripsit led to a main menu of tasks, where the user could choose "open", "edit", "spell-check", "print" or "set-up". Presumably because of the limited screen area on most TRS-80 models, there were no visible menus on the editing screen. RAM was presumably also an issue, since selecting each of the options resulted in heavy floppy disk activity.
In common with a lot of software of the era, Scripsit had some significant bugs that could result in the loss of work. The Model 4 version, for example, would inject random text throughout the document if the user held the control key ('@') down for more than a few seconds.
One handy and somewhat innovative feature for the time was the ability to add custom control characters in the printer set up. This allowed the user to take advantage of new features in a printer that were not intrinsically supported by Scripsit such as different fonts or colours, or printing extended ASCII characters to produce simple lines and boxes. This was possible as printer manuals of the day included a full list of supported control character sequences for such functionality.