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| ☜ | Side-Effects on $X and $Y1977 Version of ANSI Standard | ☞ | ||||
READ and WRITE transfer characters one at a time, certain characters or character combinations represent device control functions, depending on the identity of the current device. To the extent that the supervisory function can detect these control characters or character sequences, they will alter $X and $Y as follows.
| graphic: | add 1 to $X |
| backspace: | set $X = max($X–1,0) |
| line feed: | add 1 to $Y |
| carriage return: | set $X = 0 |
| form feed: | set $Y = 0, $X = 0 |
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Copyright © Standard Documents; 1977-2024 MUMPS Development Committee;
Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 Ed de Moel.
This page most recently updated on 13-Sep-2014, 08:55:55.
For comments, contact Ed de Moel (demoel@jacquardsystems.com)