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- screenopt: optimize screen updates.
- screenopt optimizes screen updates in applications where a large amount of
- similar data is repeatedly displayed. Lines written to screenopt are
- saved in a buffer. When a newscreen character is received, the buffer is
- displayed on the terminal and then saved for comparison to the next screen.
- When the buffer is displayed, it is compared to the previous buffer
- and only those portions of the screen that have changed are updated.
- If the first character after the newscreen character is a newline,
- it is discarded. Only as many lines as the terminal can display are
- saved in the buffer.
- Options:
- The environment variable TERM, used to determine how to do the optimized
- screen updates, can be overridden with the option -t termtype
- The newscreen character can be set with -n c
- It is ^L (formfeed, control-L) by default.
- -h gives this help screen.
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