STXK：SAPscript 文本转换，可以获得文本的ASCII码等。
COMPOSE_ITF
COMPOSE_RTF
CONVERT_ASCII_TO_ITF Text Conversion ASCII to ITF (SAPscript Format)
CONVERT_ITF_TO_ASCII Text Conversion ITF (SAPscript Format) to ASCII
CONVERT_ITF_TO_RTF Text Conversion ITF (SAPscript Format) to RTF
CONVERT_RTF_TO_ITF Text Conversion RFT to ITF (SAPscript Format)
CONVERT_TEXT SAPscript ：转换文本格式
EXCHANGE_ITF SAPscript ：转换风格/页面设置
EXPORT_TEXT SAP脚本:输出文本
IMPORT_STYLESHEET Implantation of an RTF style sheet in R/3 as ITF text
IMPORT_TEXT SAPscript ：输入文本
TRANSFER_TEXT SAPscript ：加载/卸载文本
