RTL and LTR text in the same paragraph

[talime]

the pdf is written in RTL language , but there are some expressions in english (LTR),

when a screen reader reads a RTL and LTR text in the same paragraph, it messes up  the reading .

what can be done?

[a_C_student]

I don't have personal experience with this, but this is what I would try .... Set the document language property to the appropriate RTL language. Nest each LTR expression in a <Span> tag and set the language property of each <Span> tag to the appropriate LTR language.

[Zaid Al Hilali]

Can you please let us know if the suggestions made by a_C_student worked for you?

I had an input some time ago about tagging a PDF with Arabic content PDF (RTL) which may or may not address the issue you're facing, see if helps you out.

[talime]

no it is not the correct answer for me, but perhaps it will help others,

In my case , the problem is that software's like older versions of Microsoft WORD, the  pdf converter,  that is used to create this PDF , messes up blocks of mixed rtl ltr text.

so it doesn't relates to Acrobat TAGGING at all ,  but rather to other software where the text it self that is converted comes out all garbled up.