Use hiragana for native Japanese words and grammar
Use katakana for foreign loanwords, emphasis, and onomatopoeia
Use kanji for content words with established kanji forms
Combine kanji and hiragana for many verbs, adjectives, and inflections
Write particles in hiragana
Write proper names with the standard script used for each name
Use long vowel marks in katakana words when needed
Follow standard Japanese writing conventions and spacing rules
Use the correct stroke order when writing by hand
Check official spellings for uncommon or ambiguous words