The ttest.exe application is a so called VT100 torture test, which tests the capabilities of a VT100 compatible terminal by using specific VT100/ANSI calls and tricks. The testing application file was written by Joe Smith on the 8th of May, 1985. The original file is still available at the inwap.com or at the texfiles.com website.
Since the application uses these tricks, three screenshots have been provided. One is text based, showing the plain text scrolled while running the program, one using PuTTY, and one using the SyncTerm terminal application.
This is the VT100 series Torture Test Demonstration. This file is a VT100-series Torture Test. It demonstrates all the visual attributes of the VT100 terminal. The top line is double-width/single-height with inverse-video line-drawing characters. The 2nd and 3rd lines are double-width/double-height in bold inverse video. They also show the limited scrolling region. The remaining lines will show NORMAL, BOLD, BLINK, INVERSE, and all 16 combinations of those 4 attributes. They show that there is a difference between an underscore character and the underline attribute, and that lower-case decenders go below the underline. A window pane is drawn in the lower right to show how the line-drawing set can be used. At the lower left is the character set double-wide/double-high to show the dot-matrix used. Upper-case characters are 8 by 7 in a 10 by 10 character cell, with 1 blank row on top and 2 on the bottom. The underline attribute uses the first bottom blank row, lower-case decenders use both.