Enter one or more keywords in the field "Keywords, Picture number". You can also enter picture numbers.
To link keywords, the following functions are available.

To link with AND:

• Space between two words without further OR or AND NOT instructions
• Comma
• + (plus-sign)
• " AND " between words
• " UND " between words

To link with OR:

• # (hash-sign)
• " OR " between words
• " ODER " between words

To link with AND NOT

• - (minus-sign) directly in front of the word
• " AND NOT " between words
• " UND NICHT " between words