Okay. But here's yet another version of a header block:

H--SEISMIC SURVEY DATA--SEG P1--test                                  
+          
 LINE        : **************           JOB NO.   : *********         
+          
 CLIENT      : *********************                                  
+          
 PROSPECT    : ****************                                       
+          
 CONTRACTOR  : GEO STRATA RESOURCES INC.                              
+          
 FILENAME    : *********                DATE      : SEP 20, 2006      
+          
 PROJECTION  : U.T.M.  , S.F.=0.99960, NAD27, Clarke 1866             
+          
 ORIGIN      : UTM ZONE 12              REF. MER. : 111.0000W         
+          
               0.99960000               DBS VERS. : ATS 2.6           
+          
 UNITS       : GEOGRAPHICS: D.MS - COORD.: DECIMETERS - ELEV.: DECIMET
+ERS       
 SURVEYOR    : MERCEDES SURVEYS         COMPUTED BY : CAPELLA         
+          
 KILOMETERS, LINE:    2.01              GROUP INTERVAL :   12.00 METER
+S         
 INTERPOLATED: ELEVATION = ^ ; HORIZONTAL = # ; BOTH = *              
+          
 REM: SURVEY BY RTK GPS                                               
+          
                                                                      
+          
                                                                      
+          
                                                                      
+          
                                                                      
+          
                                                                      
+          
 [ LINE         ][ POINT ][  LAT  ][  LONG  ][ EAST ][ NORTH][ELE] *[ 
+COMMENT ]
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The lines are padded with white space, but that's no problem. However, not all lines are always used. I don't need to keep blank lines, nor the very last line(s) that start with '<' or '['.