How to convert LyX doc to LaTeX

[typist at mac.com]

On 12 Oct 2021, at 9:10 pm, typist at mac.com wrote:
> 
> On 12 Oct 2021, at 8:59 pm, Axel Dessecker <a.dessecker at krimz.de> wrote:
>> Am Dienstag, 12. Oktober 2021, 11:15:04 CEST schrieb typist at mac.com:
>>> Thanks Alex, I did that. Exported to LaTeX (plain) but I cannot find the
>>> file!? (The system details were included: just-in-case.) LyX101
>>>> On 12 Oct 2021, at 7:50 pm, Axel Dessecker <a.dessecker at krimz.de> wrote:
>>>> 
>>>> LyX101,
>>>> 
>>>> Am Dienstag, 12. Oktober 2021, 08:41:01 CEST schrieb typist at mac.com:
>>>>> I am looking for a step-by-step guide that shows how to convert my LyX
>>>>> document to LaTeX.
>>>>> 
>>>>> That is: a Journal, having approved my PDF, now wants a LaTeX version of
>>>>> it.
>>>>> 
>>>>> I use: macOS Big Sur, version 11.6. LyX version 2.3.6.2 (7 January 2021)
>>>>> 
>>>>> Thank you,
>>>>> 
>>>>> LyX101
>>>> 
>>>> Why don't you just export your document via File -> Export? My machine
>>>> shows me five options to export to LaTeX but I don't think this depends
>>>> on the operating system you are using.
>>>> 
>>>> Axel
>> 
>> Please don't top-post to keep the thread.
>> 
>> As the tutorial tells you: "Select File->Export->LaTeX. This will create a file whatever.tex from the whatever.lyx file you are editing.”
>> 
>> The file will be created in the directory where whatever.lyx resides. (Unfortunately this is not made explicit in the English version of the tutorial I have installed but it is in translations such as the German one.)
>> 
>> Axel
> Thanks again, Axel. I'll try again. LyX101.

File found and tested on LaTeXiT. About 100 errors identified: undefined control sequence, missing $ inserted, LaTeX error can be used only in preamble, etc.

SOS. Where to from here, please? LyX101