Some mnemonics need to be specified with indices. For example, in basic.properties,
  ColorChooser.swatchesNameText=Swatches
  ColorChooser.swatchesMnemonic=83
  ColorChooser.swatchesDisplayedMnemonicIndex=0

This is a bit inconvenient for translators.
If the mnemonic index is wrongly set, a wrong character is underlined.

Because most mnemonics in the same file can be specified without indices, it's
difficult to understand why indice are necessary for only some mnemonics.
Is it possible to eliminate indice from .properties file? It should be effective
to reduce mistakes on translation and make translators' work easier.

At least, we'll appreciate it if you don't add new indice to .properties file
in future releases!