Gene93 I think retain's most formal, but for some reason I think keep has the meaning of "don't throw it away". I think it's used quite often in such contexts. You're right.
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Gene93I think retain's most formal, but for some reason I think keep has the meaning of "don't throw it away". I think it's used quite often in such contexts.You're right.
Gene93Are they fine?Yes. You could use "retain" but, it wouldn't be common in everyday English. It might be written on a manual.
wilpeter could easily be misunderstood by someone whose English was not naturalI would be surprised if someone said to me "What do you mean?" Yes, the meaning of hold is clear, but I don't think anyone would expect the person to hold the manual in his hand/s all the time.