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E.2 The .tlo Format

A .tlo file has a custom binary format. This section describes it using the syntax used previously for SPV binary members (see Light Detail Member Format). There is one new convention: TLO files express colors as int32 values in which the low 8 bits are the red component, the next 8 bits are green, and next 8 bits are blue, and the high bits are zeros.

TLO files support various features that SPV files do not. PSPP implements the SPV feature set, so it mostly ignores the added TLO features. The details of this mapping are explained below.

At the top level, a TLO file consists of five sections. The first four are always present and the last one is optional: 

TableLook =>
   PTTableLook[tl]
   PVSeparatorStyle[ss]
   PVCellStyle[cs]
   PVTextStyle[ts]
   V2Styles?

Each section is described below.