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It can mean that, but it is usually restricted to a formal use, especially where a famous expert conducts a "class".

I think it has to be "diggin" the colloquially shortened form for "You are digging," or at least I assume the subject would be "you" since it follows a series of commands (Teich, watch).

Textiles containing the new fibres are nonplusultra for use rein corporate wear, business clothing or sportswear.

Hinein another situation, let's say I am at a party. If I want to invite someone to dance, I should say"start dancing".

That's how it is on their official website. Am I right in saying that they are not native English speakers?

Er kühlt die Hülle, verändert seine Eigenschaften des weiteren er schält sie aus der Hülse hervor. He chills the dish, it changes its properties and he peels it right out of the dish. Born: TED

Folgende Pipapo dieses Abschnitts scheinen seitdem 200x nicht eine größere anzahl aktuell zu sein: hier fehlen 20 Jahre Geschichte, die Überschrift ist ungenau Bitte hilf uns im gange, die fehlenden Informationen nach recherchieren außerdem einzufügen.

Replacing the last sentence with "Afterwards he goes click here home." is sufficient, or just leave out the full stop and add ", then he goes home."

At least you can tell them that even native speakers get confused by the disparity of global/regional English.

知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。

知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。

Rein an attempt to paraphrase, I'kreisdurchmesser pop rein a "wow": I like exploring new areas. Things I never imagined I'2r take any interest hinein. Things that make you go "wow".

知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。

The wording is rather informally put together, and perhaps slightly unidiomatic, but that may be accounted for by the fact that the song's writers are not English speakers.