typescript - Difference between using `--save` and without it when using typings -

i using typescript definition manager version 1.0.

i read commands document.

but still not clear difference between using --save , without it.

for example,

typings install dt~aws-sdk --global typings install dt~aws-sdk --global --save 

i tried both, seems doing same thing.

does typings use --save default?

got @unional, , thanks!

when use --save, add info typings.json file.