Hello,
I'm new in this list and would like to introduce. I have been caving for over 30 years and during this time I have many caves explored and measured. So far, I have always used Caverender together with AutoCAD or very early drawn the plans by hand. Now I have found Therion and I'm thrilled. However, it is somewhat difficult for me to find or to understand one or the other in the English manual . My english is a bit rusty and not so great. Also lacking in my opinion, examples and a good descriptor list in the manual. I know of course that the project Therion is doing from enthusiastic people and so I will even try as soon as I understand more from Therion involve me positively . Once it comes, I wish one or the other question to look or to answer.
Now to my question:
I have the following data sequence in my *.th-File:

data normal from to lenght compass clino left right up down
1       2       10.83   125     -12     3.5     1.0     0.8     2.0
1       1a      1.0     125     -12     3.5     1.0     0.8     2.0
1a      1b      1.0     125     -12     3.0     0.8     1.2     1.5
1b      1c      1.0     125     -12     2.5     1.0     2.0     1.5
1c      1d      1.0     125     -12     2.0     1.5     2.0     1.0
1d      1e      1.0     125     -12     2.2     1.0     2.0     0.8
1e      1f      1.0     125     -12.......
.......1j       2       0.83    125     -12     2.2     1.0     2.0     0.6

I want the data 1 to 1a ..... until 1j to 2 only may be used for the generation of a *. xvi file , but not for the production of the finished Map in plan and extended. I'd like only the main Points 1  and 2 are taken or written. So the Centerline should go  directly from  1 to 2 .
I hope I have expressed me in a understandable way.

Many thanks for any idea

Best wishes

Markus