— Function: minibufferp &optional buffer-or-name

This function returns non-nil if buffer-or-name is a minibuffer. If buffer-or-name is omitted, it tests the current buffer.

— Variable: minibuffer-setup-hook

This is a normal hook that is run whenever the minibuffer is entered. See Hooks.

— Variable: minibuffer-exit-hook

This is a normal hook that is run whenever the minibuffer is exited. See Hooks.

— Variable: minibuffer-help-form

The current value of this variable is used to rebind help-form locally inside the minibuffer (see Help Functions).

— Variable: minibuffer-scroll-window

If the value of this variable is non-nil, it should be a window object. When the function scroll-other-window is called in the minibuffer, it scrolls this window.

— Function: minibuffer-selected-window

This function returns the window which was selected when the minibuffer was entered. If selected window is not a minibuffer window, it returns nil.

— User Option: max-mini-window-height

This variable specifies the maximum height for resizing minibuffer windows. If a float, it specifies a fraction of the height of the frame. If an integer, it specifies a number of lines.

— Function: minibuffer-message string

This function displays string temporarily at the end of the minibuffer text, for two seconds, or until the next input event arrives, whichever comes first.