CRT Unit            Unit General Description
 Input and Output    Description of access to the Input and Output files
 Special Characters  Description of special characters of the CRT Unit
 CRT Mode Constants  Constant declarations for screen mode control
 Color Constants     Constant declarations for Display Colors
 CheckBreak          Ctrl-Break Enable/Disable
 CheckEOF            Enable/Disable EOF character
 CheckSnow           Enables/Disables snow checking
 DirectVideo         Enables/Disables direct video memory writes
 LastMode            Enables/Disables direct video memory writes
 TextAttr            Sets the current Text color attributes
 WindMin             Stores minimum coordinates of current window
 WindMax             Stores maximum coordinates of current window