HP 3000 Manuals HP 3000 Manuals
Appendix G Display Attributes Whenever a text character is displayed on the screen it has an attribute, that is, a byte of information, associated with it. The way the character is displayed depends upon its attribute byte.The Micro Focus COBOLrun-time system (RTS) enables characters to be displayed on the screen with a number of display attributes. The attributes available to you depend on the terminal you are using and the terminfo entry for that terminal. They could include high or low intensity, underline, reverse video or blinking options. You can alter the value of the attribute byte, thus changing the way characters are displayed on the screen. You do this by changing either the screen attribute or the user attribute. See the chapter Library Routines (Call-by-Number) for information about the call enabling you to change the user attribute. The screen attributeenables you to specify an attribute that is associated with each character position on the screen. You can define areas of the screen as having different attributes. Whenever a character is displayed on the screen it has the attributes associated with that position. The user attributeis associated with the whole screen. All of the characters displayed on the screen take the user attribute. Once a program has set the user attribute it is enabled through the whole of the run, although another program within the same suite can change the attribute. The user attribute overrides any screen attributes you have defined.