== BIAS.TXT ==
||Category B ||Version 3.0.1 ||

=== Description ===
Non-primary option.  This is a special use case for SPC.  If the file exists, then the code is processed and executed.

BIAS.TXT allows you to make a small systematic shift to the spacecraft in the inertial frame from the SPK.  It is designed for when you have a constant offset that you detect during approach and wish to put that same value in for all of the approach images.  This allows corrections from REGISTER option G to be used before spk files are changed by FDS for immediate iteration.



=== Columns ===


 ||X ||Y ||Z ||
 || The offset in X || The offset in Y || The offset in Z ||

Units of X, Y and Z are in km.

=== Rows ===
The file has a single row, which has three entries.  The offset in X, Y and Z.

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=== Example ===


Here is a sample '''BIAS.TXT''' file.  

{{{
.0001 .002 .03
}}}
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CategoryThreeOhOne