Please capitalize where necessary: such a letter was sufficient for stalin to reach an immediate conclusion that there are doctor-plotters in the soviet union.
A: Such a letter was sufficient for Stalin to reach an immediate conclusion that there are doctor-plotters in the Soviet Union.
Q: same as /s /e. may be used to modify /t.

A: Same as /S /E. May be used to modify /T.
Q: create and save custom interface profiles and annotations
A: Create and save custom interface profiles and annotations
Problem: amoxicillin is available in the us market under the brand name amoxil, amoxicot, moxatag, trimox, dispermox, and moxilin.
Can you repeat this sentence, but capitalize it?
Answer: Amoxicillin is available in the US market under the brand name Amoxil, Amoxicot, Moxatag, Trimox, DisperMox, and Moxilin.
Text: because this appears to have nothing in common with his paradoxes, it is usual to take the line that diogenes laertius is in error.

Correct capitalization: Because this appears to have nothing in common with his paradoxes, it is usual to take the line that Diogenes Laertius is in error.
Text: sothink dhtmlmenu generates robust code compatible with almost all available web browsers.

Correct capitalization:
Sothink DHTMLMenu generates robust code compatible with almost all available web browsers.