I've had an Indesit IWC61455 for 2 years and there's a button I haven't tried yet, because I'm not quite clear about it.
The instruction booklet says this 'Eco Time' function button will adjust a program/cycle to do a quicker wash (for lightly soiled cottons/synthetics). (So far, so good).
It also says it's for a "reduced load". But by how much? (Trial-and-error doesn't appeal, especially with the long-distance travel needed from here to replace any clothes!).
Not all the programs that the Eco Time function may be used with share the same maximum load.
I can't find the answer anywhere in the booklet (though I have to say it's still a great improvement on the instruction booklet that came with my last machine, also an Indesit. That one was very dumbed-down and uninformative!).