There are two ways to do it if you “only” want to include contents of Datos.odt in new documents. Contents of Datos.odt is used like it is formatted there.
Data is included "read-only"
If data is used as it is recorded at time of creation of the new document and will never be changed afterwards, simple Insert
>Text from File
to incorporate contents into the new document. If contents is styled (formatted with paragraph and character styles), the look will be governed by style configuration in the new document and thus be consistent visually.
Variant
If your Datos.odt does not change too often, you can write it in a template document (caution! this is a special type of Writer document with extension .ott). The new document is created by launching the template. All styles and initial contents are copied into the new document which becomes an Untitled.odt (avoiding the risk of overwriting the template).
If you change later the template contents, the new contents is not transferred to existing documents, preserving their state.
Data is dynamic
In this case, every time you open the document, you get the current contents of Datos.odt. This relies on the master document feature. The “receiving” document is created with New
>Master Document
. It contains standard text and references to other .odt (called sub-documents) whose contents is dynamically displayed.
It is frequently used to build contracts by referencing company-approved clauses. Each clause or clause variant is a separate file.