The spelling of the phrase "bring in to open" requires an understanding of the IPA phonetic transcription. "Bring" is pronounced /brɪŋ/, while "in" is pronounced /ɪn/. "To" is pronounced /tu/, and "open" is pronounced /ˈəʊpən/. Therefore, when written together, the phrase is spelled as "brɪŋ ɪn tu ˈəʊpən." This phrase refers to the act of introducing something, such as a new idea or product, to a wider audience, and making it available for them to utilize or consider.