The text is centered from the tab edges.

The application can define a mnemonic key when sending this message by placing a tilde (~) character before the character that is to be the mnemonic key. The notebook brings this page to the top whenever the user presses the mnemonic key.

The mnemonic key processing is not case-sensitive, so the user can type the mnemonic character in either upper or lower case.

The application can remove or change the mnemonic key by sending additional BKM_SETTABTEXT messages for the specified page.

If this message is sent for a page having both major and minor tab attributes, the notebook sets both the major and minor tab text.