shrink-windowshrink-window is an interactive compiled Lisp function in `
window.el'. (shrink-window DELTA &optional HORIZONTAL) Make the selected window DELTA lines smaller. Interactively, if no argument is given, make the selected window one line smaller. If optional argument HORIZONTAL is non-nil, make selected window narrower by DELTA columns. If DELTA is negative, enlarge selected window by -DELTA lines or columns. Also see the `window-min-height' variable.