i like to load my logs from the previous session for quick reference, and i think there should be for than a 5,000 line limit in mirc windows. somthing like 50,000?, anyway...5,000 dont hold much in rooms i go to.
Options -> General -> Window Buffer?
well that only goes to 30,000 but that help out
tyvm
home and end buttons should scroll through the buffer text also
Ctrl+Home/End will go to the beginning/end of the buffer in a similar way to any text editor. Page Up/Down moves a page at a time. There's no way to actually scroll through the buffer with the keyboard since Ctrl+Up/Down Arrows are used for going through the editbox buffer when multi-line editbox is switched on.
CTRL + PGUP/PGDN will scroll through your buffer, line by line.