Silly question: debian/patches prefix-numbers

[Fabian Greffrath]

Hello Loic and the other mates,

in the latest libquicktime upload you introduced two new patches, namely 
60_gtk212-tooltip and 70_relibtoolize.

I am wondering if there is a convention for the use of numbers in the 
patch name prefixes (in Debian or maybe even in the OSS world) that I 
haven't heard of. Is there any reason why we use 60_ and 70_ for these 
patches and other prefix-numbers for other patches other than 'keep them 
in the right order somehow'?

Sorry, if this question sounds plain stupid, but I've been just 
wondering for a while.

Cheers,
Fabian

-- 
Dipl.-Phys. Fabian Greffrath

Ruhr-Universität Bochum
Lehrstuhl für Energieanlagen und Energieprozesstechnik (LEAT)
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