@uidialog Display a dialog with multiple controls.

@uiedit Display a dialog with an edit control.

@uifiledlg Display a file open and save dialog.

@uilist Display a dialog with a listbox control.

@uimlist Display a dialog with a multiple-select listbox control.

@uiprompt Display a prompt dialog.

@uiradio Display a dialog with radio buttons.

@uniquevals Vector or svector of unique values of object.

@unitvector Extracts column from an identity matrix.

@unvec Unstack vector into a matrix.

@unvech Unstack vector into lower triangle of sym.

@upper Uppercase representation of a string; or upper triangular matrix of a matrix.

@utc Convert local time to UTC (Coordinated Universal Time).