설명은 보통 길어지고 여러 줄에 걸쳐있기 때문에, *경로 작동* 기술을 함수 <abbr title="함수안에 있는 첫번째 표현식으로, 문서로 사용될 여러 줄에 걸친 (변수에 할당되지 않은) 문자열"> 독스트링</abbr> 에 선언할 수 있습니다, 이를 **FastAPI**가 독스트링으로부터 읽습니다.

<a href="https://ko.wikipedia.org/wiki/%EB%A7%88%ED%81%AC%EB%8B%A4%EC%9A%B4" class="external-link" target="_blank">마크다운</a> 문법으로 독스트링을 작성할 수 있습니다, 작성된 마크다운 형식의 독스트링은 (마크다운의 들여쓰기를 고려하여) 올바르게 화면에 출력됩니다.

```Python hl_lines="19-27"
{!../../docs_src/path_operation_configuration/tutorial004.py!}
```

                ED25519 Public-Key:
                pub:
                    5a:91:87:b8:77:fe:d4:af:d9:c7:c7:ce:55:ae:74:
                    aa:f3:f1:fe:04:63:9b:cb:20:97:61:97:90:94:fa:
                    12:8b
        X509v3 extensions:
            X509v3 Key Usage: critical
                Digital Signature
            X509v3 Extended Key Usage: 
                TLS Web Client Authentication

    // hair space
    assertThat(parse("http://h/\u200a").encodedPath).isEqualTo("/%E2%80%8A")
    // zero-width space
    assertThat(parse("http://h/\u200b").encodedPath).isEqualTo("/%E2%80%8B")
    // zero-width non-joiner
    assertThat(parse("http://h/\u200c").encodedPath).isEqualTo("/%E2%80%8C")
    // zero-width joiner
    assertThat(parse("http://h/\u200d").encodedPath).isEqualTo("/%E2%80%8D")

mI,OAAS,GAAgB,KAAXnI,EAAEmI,OACX7B,EACHtG,EACAF,EACM,iCACA,gCAGV2E,EAAWzF,KAAKhB,UAAUsoB,aAEtBxmB,EACOxC,KAAK+oB,SAASC,cAEd,IAAItnB,KAAK1B,KAAKkC,UAA+B,GAAnBlC,KAAK4gB,YAAmB,KACpDoI,cACA5f,QAAQ,IAAKJ,EAAatG,EAAG,MAGnCsG,EACHtG,EACAF,EAAM,+BAAiC,+BA+8B/CkkB,GAAMwC,QAr8BN,WACI,IAAKlpB,KAAK4D,UACN,MAAO,qBAAuB5D,KAAKsF,GAAK,OAE5C,IAEI6jB,EACAte,EAEAue,EALAtgB,EAAO,SACPugB,EAAO,GAcX,OATKrpB,KAAKspB,YACNxgB,EAA4B,IAArB9I,KAAK4gB,YAAoB,aAAe,mBAC/CyI,EAAO,KAEXF,EAAS,IAAMrgB,EAAO,MACtB+B,EAAO,GAAK7K,KAAK...

R,8CA+CQ,cAAA,IAAA,MAAA,iBACA,MAAA,QACA,UAAA,KACA,YAAA,IACA,OAAA,EACA,QAAA,KApDR,gDAuDU,YAAA,IAvDV,4C/Gy9hCA,8C+G55hCQ,QAAA,KA7DR,gDAkEU,OAAA,K/Gg6hCV,+CACA,+C+Gn+hCA,+CAuEU,OAAA,EAvEV,gDA6EU,MAAA,KA7EV,kB/G8+hCA,mBAEA,mBADA,mBAFA,mBADA,mBAMA,mBADA,8B+Gv5hCM,iBAAA,QACA,cAAA,IACA,UAAA,KACA,OAAA,KACA,KAAA,KACA,YAAA,KACA,SAAA,SACA,WAAA,OACA,IAAA,EACA,MAAA,KAnGN,8BAsGM,QAAA,IAtGN,2BvGcI,cAAA,IuG+FE,iBAAA,KACA,QAAA,aACA,YAAA,IACA,QAAA,IAKN,qCtGzGM,WAAA,KsG6GA,iBAAA,QACA,OAAA,IAAA,MAAA,QALN,sDAQQ,oBAA...