Schneider was an Austrian world class player who lived and played for awhile in Scandinavia (Sweden and Norway mainly) from what I have been told, but still...
Many explain conventional bids with a name instead if saying what is shows. I really dont like when people alert at BBO saying ...
"Try bidding 2♣ to show a hand with 5-4 in the majors. Partner can bid 2♦ to ask for your longer major.
A 2♦ overcall shows 5-5 in the majors."
This is also a good treatment if your opponents bid
1♣/1♦ - (pass) - 1nt - ...
I rather have it as ♣s, but if I sit down with no agreement, then its both Majors. 2♦ as a preempt doesn't barrage a lot anyway, so can use it as both Majors.
So, it depends whether its a regular partner or someone else
1minor - (1♥):
X = 4 or 5 card ♠ (opener support dbl with 3card ♠ if next opponent bids something up to 2♥)
1♠ = transfer to nt. No ♥ stopper
1nt = natural, ♥ stopped
2♥ = +6card ♠
2♠ = Inverted minor raise
Is getting more and more ...