Represents the "Length1" entry of the embedded font stream dictionary object.

It is defined as part of the PDF 1.0 specification.

It contains an integer representing a PDF numeric object.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 127, page 290.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 125, page 350.

For Type 1 programs, this gives the length in bytes of the clear-text (ASCII) section of the font program, before any compression filter is applied.

For TrueType programs embedded via FontFile2, this gives the total length of the uncompressed TrueType binary.