Here is a translation of the section in the manual dealing with "lots" adjustments. I am almost certain it really is some form om tuning indicator. Here goes, "lots" is translated to navigator:
Navigator (S63, R158 and R157)
Press the navigator button.
1) Set the tuner to a silent channel. Connect a VTVM to junction R157/R161 (range +10V). Feed an un-modulated HF signal of 38,9MHz to test-point "M". Adjust S63 for maximum reading on the VTVM.
2) Set the tuner to a silent channel. Turn R158 so that the white ribbon takes up approximatly 1/5 of the totalt picture width.
3) Tune the set to receive a transmitter of average signal strength. Adjust R157 so that when the set is correctly tuned, the white ribbon takes up approximatly half the picture width. Check that a distinct maximum of the ribbon width can be found when tuning.
It really sounds amazing for 1959. I would not mind us going further into how this clever function was realized
EDIT:
Oops. VTM -> VTVM (i.e Vacuum Tube Voltmeter)