| System Parameters |
|
| Description | Sets destructive cursor. (Moving from left to right, replaces intervening characters with spaces up to the new cursor position). |
| Default | Off. The cursor jumps over the intervening characters. |
| Example | SET_PARAM 'DC'=0 PRINT @(15),"B", @(10), "A", @(20), "C" With 'DC' off, the screen output is " A B C". The cursor jumps first to column 15 and prints the B, jumps to column 10 and prints the A, then finally jumps to column 20 and prints the C. SET_PARAM 'DC' PRINT @(15),"B", @(10), "A", @(20), "C" With 'DC' on, ProvideX uses a destructive cursor (line print mode, as in BBx and some MAI systems). The preceding example would result in " A C", because the output driver simply issues spaces when advancing on the same line. With 'DC' on, after printing the B and A, the driver uses 9 spaces to position itself at column 20 to print the C. The destructive cursor overwrites the B with the space. |