Character Attributes - Terminal Devices
Characters displayed may use any of the following attributes:
|
Mnemonic |
Description |
|
'SF','SB' |
High/low intensity |
|
'BU','EU' |
Start/end underline |
|
'BB','EB' |
Start/end blink |
|
'BR','ER' |
Start/end reverse |
|
'ATTR' |
Set all attributes |
If an attribute is not available on the terminal, it will not affect the display. Some terminals may support a particular attribute in a manner that prevents PRO/5 from using it. As an example, some terminals use a position on the display to retain an attribute. Setting this would require PRO/5 to redisplay an entire line and possibly discard display characters to support this mode of handling attributes. PRO/5 will ignore attributes that require space on the display to function. For further information see Character Attributes.
Colors
PRO/5 maintains two colors for each character: a foreground color and a background color. The foreground color is the color of the character itself; the background color is the color of everything except the character in the region around the character.
The display of color on terminals capable of handling colors is accomplished using:
|
Mnemonic |
Description |
|
'BLACK' |
Color black |
|
'BLUE' |
Color blue |
|
'GREEN' |
Color green |
|
'CYAN' |
Color cyan |
|
'RED' |
Color red |
|
'MAGENTA' |
Color magenta |
|
'YELLOW' |
Color yellow |
|
'WHITE' |
Color white |
|
'RGB' |
Set foreground and background colors |
|
'BACKGR' |
Make next color set background |