I read the site (https://bittrex.com/home/api)

I could not find the information of market buy/sell commands. Would you please help?

Moreover, I read the following from the api site

https://bittrex.com/api/v1.1/market/selllimit?apikey=API_KEY&market=BTC-LTC&quantity=1.2&rate=1.3

My understand of this statement is that I use my 1.2 Bitcoin to buy 1.3X1.2 Litecoin. Am I right?

If I want to use my Litecoin to buy Bitcoin, do I need to change the market from BTC-LTC to LTC-BTC??

I read the api documentation but I could not find anythin related to market buy and sell commands. Where do I find this information?

Moreover, I read the following from the api site

https://bittrex.com/api/v1.1/market/selllimit?apikey=API_KEY&market=BTC-LTC&quantity=1.2&rate=1.3

My understand of this statement is that I use my 1.2 Bitcoin to buy 1.3X1.2 Litecoin. Is this correct?

If I want to use my Litecoin to buy Bitcoin, do I need to change the market from BTC-LTC to LTC-BTC??