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System Commands

About 4 min

System Commands

System commands are used for file operations, undo/redo, and other system-level functions.

Tip

For detailed file operation APIs and examples, see File Operations.

File Operations

NEW - New

Creates a new drawing file.

Command Name: NEW

Command: NEW

Creates a blank drawing with default settings after execution.

OPEN - Open

Opens an existing drawing file (local .webcad file).

Command Name: OPEN

Command: OPEN

Opens a file selection dialog after execution, supporting .webcad format files.

CLOSE - Close

Closes the current drawing.

Command Name: CLOSE

Command: CLOSE

If there are unsaved changes, you will be prompted to save.

CLOSEX - Close and Exit

Closes the current drawing and exits the application.

Command Name: CLOSEX

Command: CLOSEX

QSAVE - Quick Save

Downloads the current drawing as a .webcad file.

Command Name: QSAVE

Command: QSAVE
  • Downloads using the current file name
  • File format is JSON, easy to parse

SAVEAS - Save As

Downloads the drawing with a custom file name.

Command Name: SAVEAS

Command: SAVEAS

Opens a dialog where you can customize the file name before downloading.

OPENFROMSERVER - Open from Server

Opens a drawing file from the server, displaying the drawing browser dialog.

Command Name: OPENFROMSERVER

Command: OPENFROMSERVER

The drawing browser supports:

  • Browsing backend DWG drawings
  • Browsing imported drawings (imports)
  • Browsing design drawings (designs)
  • Selecting normal open or tile open
  • Managing branches and versions

SAVESERVER - Save to Server

Saves the current drawing to the server (incremental save).

Command Name: SAVESERVER

Command: SAVESERVER

Incremental save features:

  • Only saves modified parts (diff)
  • Supports version history rollback
  • Supports multi-user collaboration conflict detection

OPENFROMLOCAL - Open from Local Cache

Opens a drawing from local IndexedDB cache.

Command Name: OPENFROMLOCAL

Command: OPENFROMLOCAL

Displays a list of local drawings to select from.

SAVELOCAL - Save to Local Cache

Saves the current drawing to local IndexedDB cache.

Command Name: SAVELOCAL

Command: SAVELOCAL

Local cache features:

  • Uses IndexedDB storage with large capacity
  • Supports offline access
  • Preserves server origin information for subsequent synchronization

Import/Export

IMPORTDWG - Import DWG

Uploads a local DWG/DXF file to the server and opens it.

Command Name: IMPORTDWG

Command: IMPORTDWG

Import workflow:

  1. Select a local DWG/DXF file
  2. Upload to the server
  3. Configure import options (drawing name, open method, etc.)
  4. Server parses and converts the file
  5. Load into the editor

Supported file formats:

  • DWG: AutoCAD drawing format (versions 2000-2018)
  • DXF: Drawing Exchange Format

EXPORTDWG - Export DWG

Exports the current drawing in DWG format and downloads it.

Command Name: EXPORTDWG

Command: EXPORTDWG

Export options:

  • CAD Version: Target DWG version (2000-2018)
  • Zoom to Extents: Auto zoom after export
  • Use Cache: Accelerate repeated exports
  • Explode Groups: Explode groups into independent entities
  • Native Dimensions: Export as AutoCAD native dimensions
  • Update Original: Incremental modification based on original DWG (imports type only)

Undo/Redo

UNDO - Undo

Undoes the last operation.

Command Name: UNDO
Alias: U

Command: UNDO

Options

OptionDescription
NumberUndo a specified number of operations
ALLUndo all operations
BReturn to the previous mark
MSet a mark

Shortcut

Ctrl + Z

REDO - Redo

Redoes the last undone operation.

Command Name: REDO

Command: REDO

Shortcut

Ctrl + Y

Notes

  • Can only redo operations that were just undone
  • If a new operation is performed after undoing, redo is no longer available

Selection Operations

SELECTALL - Select All

Selects all visible objects in the current space.

Command Name: SELECTALL

Command: SELECTALL
Found n objects.

Shortcut

Ctrl + A

System Settings

SETTINGS - Settings

Opens the system settings dialog.

Command Name: SETTINGS

Command: SETTINGS

Configurable options include:

  • Display settings
  • Snap settings
  • Performance settings
  • Shortcut key settings

ABOUT - About

Displays the about dialog.

Command Name: ABOUT

Command: ABOUT

Displays version information and copyright notice.

PLUGINS - Plugin Management

Manages installed plugins.

Command Name: PLUGINS

Command: PLUGINS

SWITCHWORKSPACE - Switch Workspace

Switches the interface workspace layout.

Command Name: SWITCHWORKSPACE

Command: SWITCHWORKSPACE
Select workspace: <Select workspace name>

Linetype Management

LINETYPELOAD - Load Linetype

Loads linetype definitions from a linetype file or string, supports dialog editing and viewing current linetypes.

Command Name: LINETYPELOAD

Command: LINETYPELOAD
Select linetype definition source [File(F)/String(S)/Dialog(D)/View(V)] <File>:

Option descriptions:

OptionDescription
FLoad linetype definitions from a .lin or .txt file
SEnter linetype definition string from command line (multiline input, empty line to end)
DOpen dialog editor with definition input on the left and format description on the right
VView all currently loaded linetype definitions (can copy/export)

Linetype definition format:

*Linetype name,Description
A,element1,element2,...

; Element description:
; Positive number = Dash length
; Negative number = Gap length
; 0 = Dot

; Examples:
*DASHED,Dashed line __ __ __ __
A,12.7,-6.35

*CENTER,Center line ____ _ ____ _
A,31.75,-6.35,6.35,-6.35

LINETYPELIST - List Linetypes

Lists all linetypes loaded in the current drawing.

Command Name: LINETYPELIST

Command: LINETYPELIST
Loaded linetypes:
- Continuous
- Dashed
- Center
- Hidden
...

LINETYPEDELETE - Delete Linetype

Deletes unused linetype definitions.

Command Name: LINETYPEDELETE

Command: LINETYPEDELETE
Enter linetype name to delete: <Enter linetype name>

Pattern Management

PATLOAD - Load Pattern

Loads hatch pattern definitions from a PAT file or string, supports dialog editing and viewing current patterns.

Command Name: PATLOAD

Command: PATLOAD
Select pattern definition source [File(F)/String(S)/Dialog(D)/View(V)] <File>:

Option descriptions:

OptionDescription
FLoad pattern definitions from a .pat or .txt file
SEnter pattern definition string from command line (multiline input, empty line to end)
DOpen dialog editor with definition input on the left and format description on the right
VView all currently loaded pattern definitions (can copy/export)

PAT pattern definition format:

*Pattern name,Description
angle,x-origin,y-origin,x-offset,y-offset[,dash pattern]

; Parameter description:
; angle = Line angle (degrees)
; x-origin,y-origin = Line start point coordinates
; x-offset,y-offset = Offset between adjacent lines
; dash pattern (optional) = Positive: dash, Negative: gap, 0: dot

; Examples:
*ANSI31,ANSI Iron/Brick/Stone
45,0,0,0,3.175

*HONEY,Honeycomb pattern
0,0,0,0.1875,0.325
60,0,0,0.1875,0.325
120,0.1875,0,0.1875,0.325

Script Execution

EXECSTR - Execute Script

Executes a command script string.

Command Name: EXECSTR

Command: EXECSTR
Execute script command
<Script input dialog opens>

Opens a script input dialog after execution. Enter the script in the text box and click Execute.

For detailed information, see Script Execution Documentation.

System Variables

Common System Variables

VariableDescriptionExample Value
OSMODEObject snap mode4133
ORTHOMODEOrtho mode0/1
LTSCALELinetype scale1.0
PLINEWIDPolyline width0
CLAYERCurrent layer"0"
CECOLORCurrent color256
ANTIALIASAnti-aliasing0/1

Setting System Variables

Enter the variable name directly to modify:

Command: OSMODE
OSMODE <4133>: 0

Shortcut Key Summary

ShortcutFunction
Ctrl + NNew
Ctrl + OOpen
Ctrl + SSave
Ctrl + ZUndo
Ctrl + YRedo
Ctrl + ASelect All
Ctrl + CCopy
Ctrl + VPaste
Ctrl + XCut
DeleteDelete
EscapeCancel

Script Example

; System initialization script
OSMODE
4133

LTSCALE
1

ORTHOMODE
1

; Set current layer
CLAYER
0

; Create new layer
MAKELAYER
Border

CLAYER
Border

Next Steps