TIN points file format

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TIN points file is a delimited text file that uses a comma to separate values. Each line of the file describes one point. Each point record consists of 4 or 3 fields, separated by commas. The fields are name of point type (PtypeName) and X, Y, Z coordinades. Coordinate is numeric value with decimal point. Point type is optional field. Each line will have the same number of fields.
Instead of comma can be used semicolon symbol, or space. In case of space delimiter the point type field is not used.

There are possible formats of point record:

PtypeName,X,Y,Z

X,Y,Z

PtypeName;X;Y;Z

X;Y;Z

X Y Z

This is fragment of TIN points file:

CULG,12319.15707,3662601.976,344.9585203
CULT,12319.21647,3662580.556,345.9817624
CULB,12319.24426,3662580.662,345.9648973
CULG,12319.25437,3662603.416,345.025384
CONC-W,12319.26104,3662603.544,345.2647917
CONC-W,12319.27363,3662603.69,345.267932
CULG,12319.37921,3662597.412,344.9556439
CULT,12319.49164,3662580.507,346.2358612
CONC-W,12319.55002,3662603.846,348.0832045
CULT,12319.70647,3662580.34,346.5385489
CULG,12320.19597,3662592.11,344.7032931
SL,12320.41712,3662604.199,347.6705433
CONC-W,12320.43449,3662597.712,348.0998656
PILL,12321.0876,3662598.061,345.0357182
CULG,12321.14255,3662587.083,345.2625241
PILL,12321.14599,3662598.323,344.8941014
SL,12321.30501,3662597.835,347.6662827