For formatted files, examples of file sections are given in Grid Sections and Non-Grid Sections. For binary files, the header indices described in subsequent sections (for example, 10 for the node section) are preceded by 20 for single-precision binary data, or by 30 for double-precision binary data (that is, 2010 or 3010 instead of 10). The end of the binary data is indicated by End of Binary Section 2010 or End of Binary Section 3010 before the closing parameters of the section.

An example with the binary data represented by periods is as follows:

 (3010 (2 1 2aad 2 3)(
 .
 .
 .
 )
 End of Binary Section 3010)