Noob question : How text styles work in autocad 2006 ?

Ok, here's my "problem" : I'm trying to figure out the usefulness of
using 3 different text styles.
A started a small project using a couple of text styles. Today I
wanted to change the size of all of my text assigned one of those
styles. And here comes my problem. I stupidly thought autocad styles
work like say word styles and that changing the text style properties
would change all of the text that has been assigned that style. Well
it seems no, or maybe I'm doing something wrong ?
Any help concerning the use of text style, or a workaround to update
rapidly text would be welcome.
Thanks.

 

Use QSELECT and PROPERTIES to modify multiple TEXT or MTEXT objects
simultaneously.

Some STYLE properties are only used at creation time, such as HEIGHT.
Others are dynamic, such as the font.

MTEXT is different in that a certain font (among other properties) can
be embedded in the string itself. What this means is that an MTEXT
entity may have the STYLE "Standard", which has the font "txt.shx" --
but it may appear to be using the font "VERDANA". And if you change the
STANDARD style from "txt.shx" to "simplex.shx" - that MTEXT entity will
not change - because the VERDANA font is embedded in the MTEXT string.

 

Thanks a lot for your answer. It clears up many things now.
Anyway I find it a pity that text styles do not behave in the
"ordinary" way. There sure must be some good reason why it behaves
that way.