Obtains the current value of the sample position indicator
[seek]=edftell(handle,edfsignal);
integer containing file handle of the opened bdf/edf-file
Minimum value is 1
current offset
The edftell function obtains the current value of the sample position indicator for the edfsignal pointed to by edfsignal. Returns the current offset. Otherwise, -1 is returned Note that every signal has it's own independent sample position indicator and edftell() affects only one of them.