KB10239 - I am using LineSymbol := SymbolList.Prepare('logo.cgm'); and as result I have a line with a short breaks between the individual symbols forming the line. How to solve this, i.e., eliminate the breaks?

Check the following:
1) Make certain that LineSymbolGap=0.
2) Test your CGM symbol in our sample CGM viewer (refer to DK sample set #1) to confirm that it does not have an embedded border.
3) The symbol used to create the line should start at (0,0), which will be a rotation point.
4) During rendering such a line formed with a repetitive symbol is generalized so that any sub-line will match the symbol width. To smoothen such line generalization, try composing the line with narrower symbols or applying a smaller LineWidth.