From The Third Book: Lines 31-32 of Meyer’s Zettel:
Pay heed to Indes, understand me rightly, hit him before he adopts his posture.
Master Meyer explains further:
“…when you are in the Zufechten, and he acts as if he will adopt a posture, then do no let him be in peace or come to it, but always attack first; and as he is choosing a posture, lay on at once to the nearest opening, and act as if you intended to cut strongly; but let it fehlen, or Verfliegen, and attack to another opening; then as soon as you have come halfway in or onto his sword with your blade, then do not be idle, but deliver a Zwerchau, or Umbschlagen, or Ausreißen, or Schnitt, or Winden, or do whatever work may most properly come to hand for you.” – Meyer (1570) “Grundtliche Beschreibung der Kunst des Fechtens”, 1.45v – 1.46r
“Many have believed that the word Indes has its origin from the Latin word intus, and indicates the inside combat, which arises from the Winden and similar work; but you will hear now that this is not true. I leave the meaning of the word intus to the Latinists, but the word Indes is a good German word, and embodies a serious exhortation to quick judgment, so that one should be constantly swift of mind.” – Meyer (1570) “Grundtliche Beschreibung der Kunst des Fechtens”, 1.25r
“Thus you should respond Indes quickly with convenient work, with this, you are strongest on his Stücken, when you lay on with your work in the Vor, and in this you are crowded so that you must displace him after, thus is a constant changing with the Vor and Nach, now you have it, then he does, But he who does not pay attention to it, he will nonetheless never learn to fence.” – Meyer (1560) MS A.4o.2, 1.6r
More on Indes from the German tradition of with Ringeck: