5.7. Full text search# 5.7.1. Boolean mode 5.7.1.1. Summary 5.7.1.2. Usage 5.7.1.3. Qualifier 5.7.1.3.1. KEYWORD1 KEYWORD2 5.7.1.3.2. KEYWORD1 OR KEYWORD2 5.7.1.3.3. +KEYWORD 5.7.1.3.4. -KEYWORD 5.7.1.3.5. PREFIX* 5.7.1.3.6. "PHRASE" 5.7.1.3.7. (SUBEXPRESSION...) 5.7.1.4. Pragma 5.7.1.4.1. D pragma 5.7.1.4.2. W pragma 5.7.1.4.3. S pragma 5.7.2. Search and Scoring in Mroonga 5.7.2.1. Mroonga Scoring in natural language mode 5.7.2.1.1. Splitting a query into tokens 5.7.2.1.2. Removing not matched tokens 5.7.2.1.3. Calculating weight per token 5.7.2.1.4. Getting the top N weight tokens 5.7.2.1.5. Summing up the weight per token which exists in a document, and is one of the top N weight tokens