Infinitives, which consist of "to" plus a verb in English but are a single word in French, are one of the first things that French students learn. To take examples of the three regular conjugations that are part of every beginning French class, aimer is "to like" or "to love," finir is "to finish" and rendre is "to give back" or "to return."
Once you've known that for quite a while, it can be hard to see that à plus an infinitive works differently. Consider these examples:
à suivre – to be continued
à rendre – to be returned
à débattre - to be discussed
le document à traduire – the document to be translated
les mesures à prendre – the action to be taken
When à is in front of an infinitive, it often makes the infinitive passive in English ("to be continued" instead of "to continue").
This is important for translators into French as well. When you see "the document to be translated" you might be tempted to write "le document à être traduit" instead of the correct le document à traduire.