Given a string containing multiple line ID's in format "1;3;5T8", this function returns true if the lines form either a closed loop or a continuous line
| lineSelection | string | string containing the line ID's that need to be checked. This string will be modified such that the lines are in order |
| checkDirections | boolean | if TRUE, an error is returned if the lines' individual directions are not consistent. If FALSE, the individual lines' order is ignored. |
| pErrMsg | string | error message describing why it failed |
| Return value | boolean | true if the lines form a closed loop or continuous line |
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