Example

INTERFACE DISP
   .
   PARAMETER IMAGE
         .
      PROMPT 'Image to be displayed'
      PPATH 'CURRENT,DEFAULT'
      DEFAULT IUE.IMAGE.SWPTEST
         .
   ENDPARAMETER
   PARAMETER DISPLAY
         .
      PROMPT 'Image display device'
      PPATH GLOBAL
      ASSOCIATION <-GLOBAL.DEVICE
         .
   ENDPARAMETER
   PARAMETER LIMITS
         .
      PROMPT 'Pixel limits'
      PPATH 'DYNAMIC,DEFAULT'
      DEFAULT 1,511,255,512
         .
   ENDPARAMETER
      .
ENDINTERFACE

Assuming that:

1.

There is no current value for IMAGE.

2.

GLOBAL.DEVICE has the value XWINDOWS.

3.

The program has not specified a dynamic default for LIMITS.

Then, with the above Interface File, if the user just types:

disp

(i.e. does not give any parameter values), and the VPATH field results in the user being prompted, the three prompts would be something like:

IMAGE - Image to be displayed /@IUE.IMAGE.SWPTEST/ >
DISPLAY - Image display device /@XWINDOWS/ >
LIMITS - Pixel limits /[1,511,255,512]/ >

Note the `@' in the suggested values is inserted by the system to avoid ambiguity between names and character strings.