===== The display interface =====

{{ :manual:chapter2:hp50g-tophalf-display-small.jpg?800|newRPL display interface}}

The **newRPL** display interface is similar to that of the stock HP 50g ROM in that the top ~65% of the display is the stack area (levels 1 through 7), followed by a row of soft menus. A new feature of **newRPL** is two separate sets of soft menus. The top set of soft menus (**Menu 1**) spans the width of the display.  The second set of soft menus (**Menu 2**) occupies two lines on the lower left of the screen. 

==== Angle Indicator ====

The angle indicator displays the current angle mode of the calculator.  In the figure, the calculator is in degree mode.  Other mods are radians, grads and degrees / minutes / seconds.  The angle mode can be changed using the commands ''[[manual:chapter6:flags:cmd_deg|DEG]]'' (to degrees), ''[[manual:chapter6:flags:cmd_grad|GRAD]]'' (to grads), ''[[manual:chapter6:flags:cmd_rad|RAD]]'' (to radians) and ''[[manual:chapter6:flags:cmd_dms|DMS]]'' (to degrees / minutes / seconds).

==== Complex Mode Indicator ====

If complex mode is set (flag [[manual:appendix:flags#flag-103|-103]]), a ''C'' annunciator is shown in the display.

==== Flag Indicators ====

The flag indicators show the first six user flags (out of 128 total possible).  They are arranged as flags 1 through 3 on the top row and 4 through 6 on the bottom row.  So, for example, setting flag 3 is accomplished by ''3 [[manual:chapter6:flags:cmd_sf|SF]]'', and clearing the flag by ''3 [[manual:chapter6:flags:cmd_cf|CF]]''.  The figure shows flag indicators 1 and 5 set, but 2, 3, 4, and 6 cleared.


==== SD Card Indicator ====

To the right of the flag indicators is the SD card indicator.  If a standard SD card is inserted, ''SD'' is shown.  If a SDHC card is inserted, ''HC'' is shown.  This indicator can be absent (no card inserted) or displayed in different ways:

  * **grey**: card inserted but not mounted, as shown in the figure;
  * **black**: card mounted, can be safely removed;
  * **inverse black**: card mounted and write pending, not safe to remove - after 3 seconds wait with no write it reverts to black;
  * **inverse grey**: open files but all writes complete - safe to remove card after closing files. 


==== Autocompletion ====

The instruction completion region of the display offers the extremely useful feature of suggesting instructions during typing.  For example, if a **K** is typed, the command ''[[manual:chapter6:ui:cmd_key|KEY]]'' pops up first; as more letters are typed, a new suggestion may appear.  Once a suggested instruction appears, all the possible instructions that match the letters typed thus far can be scrolled through using **AL-{UP/DN}**.  Instruction selection can be made with **AL-RT**.