Merge commit '4195d097c535acf9e1c60b323134fcb5609c18b7' * commit '4195d097c535acf9e1c60b323134fcb5609c18b7': Improve documentation of getAltitude
Merge commit '4195d097c535acf9e1c60b323134fcb5609c18b7' * commit '4195d097c535acf9e1c60b323134fcb5609c18b7': Improve documentation of getAltitude