Define Source Drawing Creation Time

Purpose

The Define Source Drawing Creation Time function provides information to DWF reading applications about when the source file of the .dwf file was generated.

Syntax

Time The number of seconds elapsed since midnight (00:00:00), January 1, 1970, coordinated universal time (GMT)

Desc Any humanly readable description of the time when the source file of the .dwf file was generated

Details

Some DWF reading applications may need to "know" when the source of the .dwf file was created. The DWF generating application can indicate this with the SourceCreated opcode:

(SourceCreated 820497600 'January 1, 1996')

Notes

DWF reading applications should not expect to be able to parse the Desc argument, though it could be shown to a user.

A .dwf file should contain at most one occurrence of the source creation time opcode, which by convention should be nested inside a Define Drawing Information Block opcode.

Default

By default no source drawing creation time is defined, which is equivalent to

(SourceCreated 0 unknown)

Implementation in WHIP! Versions

See Also

Define Drawing Creation Time, and Define Drawing Information Block