My server application uses only the upper/left part of the screen, what is the best Glink setup for this?

In this case you should make sure that the font size is so big that only the rows/columns used by the server application is visible on the screen. This can be done by adjusting the font size and have a floating screen, or you can set the font size to "Fit screen" and use the "Limit screen view (x,y)" to set which columns (1 to x) and rows (1 to y) that should displayed. Glink will now automatically select the best font size to show this part of the emulator screen. You configure the Font size and Limit screen view (x,y)  in Menu -> Settings -> Screen options.

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Limit screen view (x,y) is very useful if your host application only use the upper left part of the screen, for example 20 columns and 10 rows. Then you would set this parameter to 20,10 and combine it with Font size: Fit Screen.

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Here is one example of how you can use Font size parameter and Limit screen view (x,y) parameter. If the terminal has 80 or 132 columns and 24 rows, but your application only uses 20 columns and 10 rows, it makes no sense to show columns above 20 or rows below 10 to the user. 

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