Function execution apparatus, and method and computer-readable medium therefor

A method implementable on a processor connected with a display and a touch panel configured to detect an indicating operation to indicate a position on the display, the method comprising:

• controlling the display to display a standby screen, the standby screen including a tab display area to display a plurality of tabs, and a tab screen display area to display a tab screen corresponding to a selected tab of the plurality of tabs, the plurality of tabs being associated with a plurality of tab screens, respectively, wherein each of the tab screens includes a plurality of icons associated with a corresponding tab, and at least one of the tab screens includes a particular specified function icon and at least one of a shortcut-registrable icon and a shortcut icon, the particular specified function icon being previously registered as an icon for causing the processor to execute a particular function of a plurality of functions executable by the processor, each function being registered with a corresponding one of specified function icons, the shortcut-registrable icon being an icon with which a shortcut function is registrable, the shortcut function enabling the processor to execute a specific function of the plurality of functions under a specific execution condition, the shortcut icon being generated to replace the shortcut-registrable icon therewith in response to the shortcut function being registered with the shortcut-registrable icon, the shortcut icon being configured to, when operated, cause the processor to execute the shortcut function;
• when the standby screen is displayed on the display, in response to detecting, via the touch panel, an indicating operation to indicate an unselected tab of the plurality of tabs displayed in the tab display area of the standby screen, bringing the indicated tab newly into a selected state instead of a currently-selected tab, and controlling the display to display a tab screen corresponding to the newly-selected tab in the tab screen display area;
• when the particular specified function icon is displayed on the standby screen, in response to detecting, via the touch panel, an indicating operation to indicate the particular specified function icon, starting a process to execute the particular function registered with the specified function icon;
• when the shortcut-registrable icon is displayed on the standby screen, in response to detecting, via the touch panel, an indicating operation to indicate the shortcut-registrable icon, beginning a process to register the shortcut function with the shortcut-registrable icon and generate the shortcut icon to replace the shortcut-registrable icon with the generated shortcut icon;
• and
• when the shortcut icon is displayed on the standby screen, in response to detecting, via the touch panel, an indicating operation to indicate the shortcut icon, starting a process to execute the shortcut function registered with the shortcut icon.

A non-transitory computer-readable medium storing computer-readable instructions that are executable by a processor connected with a display and a touch panel configured to detect an indicating operation to indicate a position on the display, the instructions being configured to, when executed by the processor, cause the processor to execute a plurality of functions and perform a particular control process, the particular control process comprising:

• a standby screen displaying process comprising:
• controlling the display to display a standby screen, the standby screen including a tab display area to display a plurality of tabs, and a tab screen display area to display a tab screen corresponding to a selected tab of the plurality of tabs, the plurality of tabs being associated with a plurality of tab screens, respectively, wherein each of the tab screens includes a plurality of icons associated with a corresponding tab, and at least one of the tab screens includes a particular specified function icon and at least one of a shortcut-registrable icon and a shortcut icon, the particular specified function icon being previously registered as an icon for causing the processor to execute a particular function of the plurality of functions, each function being registered with a corresponding one of specified function icons, the shortcut-registrable icon being an icon with which a shortcut function is registrable, the shortcut function enabling the processor to execute a specific function of the plurality of functions under a specific execution condition, the shortcut icon being generated to replace the shortcut-registrable icon therewith in response to the shortcut function being registered with the shortcut-registrable icon, the shortcut icon being configured to, when operated, cause the processor to execute the shortcut function;
• a tab screen switching process comprising:
• when the standby screen is displayed on the display, in response to detecting, via the touch panel, an indicating operation to indicate an unselected tab of the plurality of tabs displayed in the tab display area of the standby screen, bringing the indicated tab newly into a selected state instead of a currently-selected tab, and controlling the display to display a tab screen corresponding to the newly-selected tab in the tab screen display area;
• and
• an icon operation responding process comprising:
• when the particular specified function icon is displayed on the standby screen, in response to detecting, via the touch panel, an indicating operation to indicate the particular specified function icon, starting a process to execute the particular function registered with the specified function icon;
• when the shortcut-registrable icon is displayed on the standby screen, in response to detecting, via the touch panel, an indicating operation to indicate the shortcut-registrable icon, beginning a process to register the shortcut function with the shortcut-registrable icon and generate the shortcut icon to replace the shortcut-registrable icon with the generated shortcut icon;
• and
• when the shortcut icon is displayed on the standby screen, in response to detecting, via the touch panel, an indicating operation to indicate the shortcut icon, starting a process to execute the shortcut function registered with the shortcut icon.