Controls that can be operated with direct keyboard access provide an access key (underlined mnemonic access character) to invoke them.
(OMS-75016) Provide access keys on the following objects:
All textual buttons, except "OK" and "Cancel." However, these buttons must have access keys if OK is not the default, and if Window Close does not perform the Cancel action.
Option buttons and check boxes should have access keys. If the item is not navigable, then it must have an access key. Note that only a check box or option button in a single-record block can have an access key, because the label property is not used in multi-record blocks; therefore, in multirow blocks, these items must be navigable.
(OMS-75032) In order of preference:
First letter of button or of key word.
First letter of the nonkey word.
Second letter of button label, such as C for Activate.
A strong letter of the label, such as X for Exit.
Try not to underline letters with descenders such as y, j, q, or p because the underline and letter overlap (y, j, q, or p).
Follow common conventions where applicable.
(OMS-75017) Access keys must be unique within a window, and must not conflict with the keys used by the pull-down menu (F, E, V, L, T, W and H) even if those menus are not accessible.
Oracle Applications will automatically determine unique access keys within a window. The letter you supply for buttons and other widgets will be used unless it is already employed, in which case another letter will be selected at runtime.
(OMS-75033) Use the following access keys for these common terms:
C for Clear, F for Find, C for Cancel, N for New, O for Open, and D for Done.