LG T7508TEDL Series Owner's Manual page 23

Use this mode to wash normal clothes or thick and heavy clothes which are excessively dirty.
SOAK mode can be used with FUZZY or STRONG (JEANS) or EXTRA RINSE, SILENT,
FAVOURITE, program.
SOAK will not work in GENTLE (WOOL) and
QUICK WASH, TUB CLEAN Program.
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wash