This is the 6005th most frequent Russian word.
служебными
"Служебными" translates to "official" or "service-related" in English.
The word 'служебными' in this sentence refers to tools that belong or pertain to a service or official function.
Они пользовались служебными инструментами для выполнения задачи.
They used official tools to complete the task.
Here, 'служебными' describes texts that are related to formal or official matters.
Знакомство с служебными текстами поможет понять правила оформления документов.
Familiarity with official texts will help in understanding the rules of document formatting.
In this case, 'служебными' characterizes guests in an official or formal capacity.