Datafile block

Almost all programs in the PHASE package require a DATAFILE block to parse analysed sequences. As stated previously, the DATAFILE block begins with the tag {DATAFILE} alone on a line and ends with the tag {$\backslash$DATAFILE} alone on a line. The DATAFILE block contains some necessary information which is not included in the data file itself (see the input file section for the format of this file); it contains the following control lines:

Data file: the location of the molecular sequences file to be used.
Data file = data/sequences.dna

Interleaved data file: a yes/no option that specifies whether the molecular data is interleaved.
Interleaved data file = yes

Outgroup: the label of the outgroup sequence. The inference techniques used in PHASE produce unrooted phylogenies and using an outgroup in your study is not required. However PHASE requires this parameter to produce a unique newick representation for unrooted trees.
Outgroup = Mole

Heterogeneous data models: is a yes/no parameter which specifies whether the data file contains a class section. The default value is no and the class section of your data file will be ignored if you forget this field.
Heterogeneous data models = yes