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| Sequencer | These commands set up and control the Sequencer to display a series of frames. | 
| File inclusion | This command lets you include other scripts in your program. | 
| Prompts | These commands let you change the appearance of the prompt in the script environment. | 
| Name | Read Only | Read/ Write | Description | 
|---|---|---|---|
| @deltaframe | * | The number of steps between frames. | |
| @endframe | * | The index of the last frame. | |
| @frame | * |  | The index of the current frame. | 
| @nextframe | * | The index of the next frame. | |
| @startframe | * | The index of the first frame. 
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· @startframe=0; @endframe=10; @nextframe=@startframe; sequence displayobject(20*@frame); ·
There is currently a limit of 32 nested levels of inclusion, after which the include commands are ignored.
To include the file my.script, issue the following command:
include "my.script"
The default prompt and continuation prompt are dx> and > respectively.
The following example show how to set these variables. Note that this example shows the Data Explorer prompts as they would be displayed in the executive.
dx> @prompt = "DATA EXPLORER>"; DATA EXPLORER> @cprompt = " more>";
If, after these commands, an incomplete statement was entered, Data Explorer would respond as follows:
DATA EXPLORER> a =
    more> 3 * 5;
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