It is Katakana, not Catalan..

^^YES that means Only and Just a little. i had thought some phrases using them, and trance into English. "is it salty?" "just a little" （少しだけ） some sentence could be means "only" also means 少しだけ same as "just a Little" but most time "only" translate into different vocabs as like. "his is only five years old." 彼はたったの5歳です。（たった） "if you only knew how to write Hiragana, Catalan is not so different to learn." ひらがなの書き方さえ知っていれば、カタカナを習うのはそれほど難しくありません。（・・さえ or ・・ならば） as you see those sentences, it is not natural translate into 少しだけ. it is only: oh! here is only again, this "only" is "ただ" the different way of expression of English. but the meaning is same as "only". i see your Japanese is good enough and ofcorse don`t need to mention about English, so i think you would understand why is the meaning same but the translation change. oh.. haha sorry if my English is not good enough to explain ... ;)

Yes, i believe your understanding is right. if you can show me an all sentence, i could give you better answer.